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BMW Performance Chips, 1986-1995 Models

BMW Performance Chips, 1986-1995 Models Our most popular product hands down with tens of thousands sold since 1995! We offer Performance Chips developed by legendary Bosch tuning expert Jim Conforti as well as our own dyno-developed Turner Motorsport custom chips. Turner Performance Chips provide the ultimate in performance advantage! Adding a performance chip to your BMW is the easiest and most cost effective way of increasing BMW power, torque, and performance with NO DOWNSIDES. Through years of BMW performance tuning, we are able to maximize power and torque gains for 91 octane fuel used in North America. By making changes in the ignition and fuel maps of the DME we are able to optimize performance with no side effects or compromises. On most models we also safely raise the rev limit and delete the top speed limiter. Other changes will make your BMW smoother and more responsive than when it left the factory. Our chips have a lifetime warranty and a 30-day satisfaction guarantee. If for any reason you are not fully satisfied with the increase in power and overall driveability you can return the chip to Turner Motorsport for a full refund. Chips are supplied with detailed instructions and are user-installed in about an hour.

FREE UPS Shipping is included with any Turner chip priced $249.95 or higher and shipped within the 48 US states. Free shipping applies to the performance chip only and is credited at time of checkout. Please note: for Air shipping, additional shipping charges will be applied when the order is processed.

Resources
Required Vehicle Info. Our chips are not universal. In many cases we need specific information from your car to ensure we supply the correct chip for your model, specifications, and upgrades. Click here before ordering your chip..

Chip Applications. TMS has over 210 unique chip files in our catalog! Click here to download the complete application list of Turner Motorsport Performance Chips (Adobe .pdf file).
Turner Motorsport Chip Upgrade Policy: Turner chips are upgradeable to newer versions for free within the first six months. After six months, the upgrade fee is $100, applicable for custom chips that are equal or less in value of the original purchase price of the chip being traded in. The upgrade program only applies to the original retail purchaser of the chip. This program only applies to software upgrades listed in our catalog and being purchased for the same model of vehicle. Chip trade-up applies only if the upgrades you are installing were purchased from Turner Motorsport. If the parts that require a custom chip are sourced elsewhere other than Turner, the upgrade program does not apply. This program does not apply to dealer/wholesale accounts. 

For accurate results, specify your model below.
E34 M5 Euro 3.8 Turner Motorsport Conforti Performance Chip

The Conforti-Turner Performance Chip for the Euro 3.8-liter M5 gives a small but noticeable punch in the mid-range torque from the S38. The larger 3.8 was a big improvement over the original 3.6 but with special tuning for US 91+ octane fuel we can boost the torque output by 12ft-lbs and 15hp. The best thing is that there is NO downside to installing a Turner Performance Chip. All chips are dyno-tuned to achieve optimum performance and safety. As an added feature, the top speed limiter is removed. This chip replaces the stock 28-pin original chip, common on M5's produced up to 1/95. The 32-pin chip has been discontinued.

Turner Performance Chips provide the ultimate in performance advantage! Adding a performance chip to your BMW is the easiest and most cost effective way of increasing BMW power, torque, and performance with NO DOWNSIDES. Through years of BMW performance tuning, we are able to maximize power and torque gains for 91 octane fuel used in North America. By making changes in the ignition and fuel maps of the DME we are able to optimize performance with no side effects or compromises. Other changes will make your BMW smoother and more responsive than when it left the factory. Our chips have a lifetime warranty and a 30-day satisfaction guarantee. If for any reason you are not fully satisfied with the increase in power and overall drivability you can return the chip to Turner Motorsport for a full refund. Chips are supplied with detailed instructions and are user-installed in about an hour.
 

Horsepower Gain:+15 @ 6,800 RPM

Torque Gain:+12 @ 3,200 RPM

New Rev Limit7,500

 

Required Vehicle Info

E34 M5 3.8 94-95Confirm the stock chip is 28 pins.


This performance chip fits the following BMWs:
1994-12/1994 E34 BMW M5 (Euro 3.8L)

Part #: 412-528
Price: $249.00 (USD) 
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E36 M3 Turner Conforti Stage 2 Performance Chip - HFM, 24lb Injectors Tuned specially for an E36 M3 with the Euro HFM, "24lb" fuel injectors, and a aluminum flywheel. This chip is necessary when upgrading your engine with these parts. Conforti mapped this chip on the dyno to maximize the gains for our Stage 2 engine upgrade to prevent the engine from running lean at high RPM. This chip provides a smooth power delivery from low RPM up to redline. The minimum octane required to run this chip is 91. A new 7,000 RPM rev limit and elimination of the top speed limiter are other features. Works with manual transmission cars only. 

Turner Performance Chips provide the ultimate in performance advantage! Adding a performance chip to your BMW is the easiest and most cost effective way of increasing BMW power, torque, and performance with NO DOWNSIDES. Through years of BMW performance tuning, we are able to maximize power and torque gains for 91 octane fuel used in North America. By making changes in the ignition and fuel maps of the DME we are able to optimize performance with no side effects or compromises. Other changes will make your BMW smoother and more responsive than when it left the factory. Our chips have a lifetime warranty and a 30-day satisfaction guarantee. If for any reason you are not fully satisfied with the increase in power and overall drivability you can return the chip to Turner Motorsport for a full refund. Chips are supplied with detailed instructions and are user-installed in about an hour. See below for specific information that we may need from your BMW model. 

Required Vehicle Info
E36 M3 95: Production date (MM/YY)
Part #: E36M3-3005
Price: $249.00 (USD) 
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E34 525i 91-95 Turner Conforti Performance Chip Need to breath more life into your engine? Add a Turner Performance Chip! These chips were tuned by Jim Conforti on the dyno to maximize the engine's efficiency when using 91 octane gasoline. The result is more horsepower and better torque - especially in the mid-range of the RPM band. Just because your car is a heavy 5-series doesn't mean you can't make the car faster, more responsive, andsmoother-running. The car really feels more alive! There are several different chip options, please let us know if your car has any modifications.

Turner Performance Chips provide the ultimate in performance advantage! Adding a performance chip to your BMW is the easiest and most cost effective way of increasing BMW power, torque, and performance with NO DOWNSIDES. Through years of BMW performance tuning, we are able to maximize power and torque gains for 91 octane fuel used in North America. By making changes in the ignition and fuel maps of the DME we are able to optimize performance with no side effects or compromises. Other changes will make your BMW smoother and more responsive than when it left the factory. Our chips have a lifetime warranty and a 30-day satisfaction guarantee. If for any reason you are not fully satisfied with the increase in power and overall drivability you can return the chip to Turner Motorsport for a full refund. Chips are supplied with detailed instructions and are user-installed in about an hour. Click here for installation instructions. See below for specific information that we may need from your BMW model.

1989-1990 E34 525i Power Gains:
Horsepower Gain:+15 @ 5,000 RPM
Torque Gain:+15 @ 5,000 RPM
New Rev Limit6,900

1990-1991 E34 525i Power Gains:
Horsepower Gain:+20 @ 6,000 RPM
Torque Gain:+13 @ 4,500 RPM
New Rev Limit7,000

1993-1995 E34 525i Power Gains:
Horsepower Gain:+22 @ 6,000 RPM
Torque Gain:+20 @ 4,000 RPM
New Rev Limit7,000

Required Vehicle Info
E34 525i 89-90Bosch ECU part number, beginning with "0 261"
Transmission: manual or automatic
E34 525i 91-92Bosch ECU part number, beginning with "0 261"
E34 525i 93-94No additional information required
E34 525i 95Production date (MM/YY)

This performance chip fits the following BMWs:
1989-1990 E34 BMW 525i (M20 engine)
1991-1992 E34 BMW 525i (M50 non-VAN0S engine)
1993-1994 E34 BMW 525i (M50TU VAN0S engine)
1995 E34 BMW 525i (M50TU VAN0S engine with EWS)
Part #: E34525
Price: $249.00 (USD) 
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E30 M3 2.5-liter Turner Motorsport Conforti Performance Chip

This is the same Conforti-tuned performance chip developed for the Turner 2.5 conversion package. If you're putting together your own conversion this is the finishing touch! This chip is set up around 91 octane and the specs of our 2.5L engine upgrade -

  • Sport Evo 2.5 crank
  • 11.25:1 compression
  • stock cams
  • stock air flow meter and intake
  • stock fuel injectors

Turner Performance Chips provide the ultimate in performance advantage! Adding a performance chip to your BMW is the easiest and most cost effective way of increasing BMW power, torque, and performance with NO DOWNSIDES. Through years of BMW performance tuning, we are able to maximize power and torque gains for 91 octane fuel used in North America. By making changes in the ignition and fuel maps of the DME we are able to optimize performance with no side effects or compromises. Other changes will make your BMW smoother and more responsive than when it left the factory. Our chips have a lifetime warranty and a 30-day satisfaction guarantee. If for any reason you are not fully satisfied with the increase in power and overall drivability you can return the chip to Turner Motorsport for a full refund. Chips are supplied with detailed instructions and are user-installed in about an hour.

This performance chip fits the following BMWs:
1987-1992 E30 BMW M3 (Turner 2.5L Conversion)

Part #: 071-250
Price: $249.00 (USD) 
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Quantity:   
E28 535i Turner Motorsport Conforti Performance Chip The 3.5 inline-6 is a torquey car, however, it could be a little more powerful in the upper RPM range. With a Turner Performance Chip power is boosted at all RPM with a huge 29ft-lbs of torque gain at only 2000 RPM. This chip was tuned on the dyno to yield as much performance from this engine as possible and still maintain its strength and durability. Jim Conforti tuned the fuel and spark maps to take advantage of 91 octane gasoline. By making the engine more efficient with this fuel, gains in horsepower and torque are achieved as well as making the engine run smoother.

Turner Performance Chips provide the ultimate in performance advantage! Adding a performance chip to your BMW is the easiest and most cost effective way of increasing BMW power, torque, and performance with NO DOWNSIDES. Through years of BMW performance tuning, we are able to maximize power and torque gains for 91 octane fuel used in North America. By making changes in the ignition and fuel maps of the DME we are able to optimize performance with no side effects or compromises. Other changes will make your BMW smoother and more responsive than when it left the factory. Our chips have a lifetime warranty and a 30-day satisfaction guarantee. If for any reason you are not fully satisfied with the increase in power and overall drivability you can return the chip to Turner Motorsport for a full refund. Chips are supplied with detailed instructions and are user-installed in about an hour. See below for specific information that we may need from your BMW model.

1985-1988 535i M30B34
Horsepower Gain:+24 @ 5,000 RPM
Torque Gain:+29 @ 2,000 RPM
New Rev Limit6,600 RPM


Required Vehicle Info
E28 535i 85-88Bosch ECU part number, beginning with "0 261"
For Bosch ECU "0 261 200 059", we need to know the number of pins on the original chip.
manual or automatic transmission


This performance chip fits the following BMWs:
1985-1988 E28 BMW 535i 535is
Part #: E28535
Price: $249.00 (USD) 
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E34 530i/540i Turner Motorsport Conforti Performance Chip

Adding a Turner Performance Chip gives you the biggest bang for your buck! Jim Conforti tuned these chips on the dyno to boost mid range torque and increase horsepower in the upper RPM range. Where the stock V8 seems to fall flat above 5500 RPM, the adjusted fuel and spark maps deliver more horsepower to keep the engine pulling all the way up to the new 7000 RPM rev limit*. The best thing is that there is NO downside to installing a TMS Performance Chip. Turner Motorsport has been in the BMW chip business for over 20 years and all chips are dyno-tuned to achieve optimum performance and safety. As an added feature, the top speed limiter is removed. Premium 91+ octane fuel is required.

Turner Performance Chips provide the ultimate in performance advantage! Adding a performance chip to your BMW is the easiest and most cost effective way of increasing BMW power, torque, and performance with NO DOWNSIDES. Through years of BMW performance tuning, we are able to maximize power and torque gains for 91 octane fuel used in North America. By making changes in the ignition and fuel maps of the DME we are able to optimize performance with no side effects or compromises. Other changes will make your BMW smoother and more responsive than when it left the factory. Our chips have a lifetime warranty and a 30-day satisfaction guarantee. If for any reason you are not fully satisfied with the increase in power and overall drivability you can return the chip to Turner Motorsport for a full refund. Chips are supplied with detailed instructions and are user-installed in about an hour. See below for specific information that we may need from your BMW model.
 

530i Horsepower Gain:+23 @ 6,000 RPM

530i Torque Gain:+23 @ 3,000 RPM

530i New Rev Limit*7,000

540i Horsepower Gain:+19 @ 6,000 RPM

540i Torque Gain:+33 @ 3,000 RPM

540i New Rev Limit*7,000

 

Required Vehicle Info

E34 530i/540i 93-94:
Confirm the number "1744050" is on the ECU cover
Transmission: manual or automatic

E34 530i/540i 1995:
Bosch ECU part number, beginning with "0 261"
Confirm the number "1744050" is on the ECU cover
Transmission: manual or automatic
Production date (MM/YY)
Note: the 484 ECU chip will need to be sent to Turner so the EWS code can be copied from it


Click here for an install guide with photos.

* Transmission Note: our chip's increase the engine rev limit set in the DME. The computer for the automatic transmission has its own limiter that restricts engine RPM to preserve the automatic transmission internals. Our chip will still increase horsepower and torque with the automatic but the stock rev limit will remain.

This item fits the following BMWs:
1993-1995 E34 BMW 530i 540i

Part #: E34V8CHIP
Price: $249.95 (USD) 
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S52 OBD-I Turner Conforti Performance Chip (for 21.5lb Injectors)

If you have an M3 engine and want to use the 21.5 lb/hr injectors (pink top, stock on the 2.8 M52 and 3.2 S52) we have the perfect chip for you. Instead of changing to the smaller 17lb injectors or upgrading to the full 24lb, you can use the injectors from the stock 3.2 M3. They are in-between 17lb and 24lb, allowing a little more fuel to compensate for intake and/or exhaust upgrades.Perfect for running headers with an intake! There are plenty of surplus 21.5lb injectors out there (we sometimes have them too, check out Used Parts section).

It's usually not necessary to use bigger injectors but this gives you another option in your engine planning. This software covers almost all of the popular bolt-on upgrades, including the larger HFM (Euro or 540). Choose the mods/upgrades from the list below.Turner Performance Chips provide the ultimate in performance advantage! Adding a performance chip to your BMW is the easiest and most cost effective way of increasing BMW power, torque, and performance with NO DOWNSIDES. Through years of BMW performance tuning, we are able to maximize power and torque gains for 91 octane fuel used in North America. By making changes in the ignition and fuel maps of the DME we are able to optimize performance with no side effects or compromises. Other changes will make your BMW smoother and more responsive than when it left the factory. Our chips have a lifetime warranty and a 30-day satisfaction guarantee. If for any reason you are not fully satisfied with the increase in power and overall drivability you can return the chip to Turner Motorsport for a full refund. Chips are supplied with detailed instructions and are user-installed in about an hour. See below for specific information that we may need from your BMW model.

Note: we will not be offering this software for use with cams. More aggressive camshafts require the use of the Bosch 24lb injectors. The 21.5lb injectors are maxed out when used with cams.

Additional Options:

  • EWS-delete: required when using the silver 413 ECU in a car that does not have EWS (all chassis manufactured before 12/94). If you will be using this chip in an EWS car (1/95-later) you do not need EWS-delete as nothing EWS related should be changing.
  • Speed sensor delete: for an E30 with an M50 engine conversion, the signal from speed sensor does not make it to the DME, causing a low rev limit. We remove the need for the speed sensor signal to reach the DME.

This S52 OBD-I Performance Chip applies to the following BMWs:
Any S52 engine converted to OBD-I electronics
1985-1992 E30 S52 conversion
1989-1994 E34 S52 conversion
1995* E34 S52 conversion
1992-1994 E36 S52 conversion
1995-1999* E36 S52 conversion
* - 1995-1999 model years may have EWS-II activated. Pay special attention to production dates and ECU numbers.

Part #: M3-21LB-CHIP
Price: $249.00 (USD) 
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E36 325i 1992 Turner Motorsport Conforti Performance Chip A Turner Performance Chip for the 1992 E36 325i is an absolute MUST-HAVE performance upgrade. This chip was developed on the dyno to increase horsepower and torque from low RPM all the way up to the new 7000 RPM rev limit. Engine management expert Jim Conforti tuned the fuel and spark mapping to maximize output when used with 91+ octane fuel. More power, a smoother engine, and better response are the results. Bang for the buck, this is hands-down the best upgrade to do. The rev limiter is raised to 7000 RPM and the top speed limiter has been deleted.

Turner Performance Chips provide the ultimate in performance advantage! Adding a performance chip to your BMW is the easiest and most cost effective way of increasing BMW power, torque, and performance with NO DOWNSIDES. Through years of BMW performance tuning, we are able to maximize power and torque gains for 91 octane fuel used in North America. By making changes in the ignition and fuel maps of the DME we are able to optimize performance with no side effects or compromises. Other changes will make your BMW smoother and more responsive than when it left the factory. Our chips have a lifetime warranty and a 30-day satisfaction guarantee. If for any reason you are not fully satisfied with the increase in power and overall drivability you can return the chip to Turner Motorsport for a full refund. Chips are supplied with detailed instructions and are user-installed in about an hour. See below for specific information that we may need from your BMW model.

Horsepower Gain:+20 @ 6,000 RPM
Torque Gain:+13 @ 4,500 RPM
New Rev Limit7,000

Required Vehicle Info
E36 325i/is 92Bosch ECU part number, beginning with "0 261"

This performance chip fits the following BMWs:
1992 E36 BMW 325i 325is
Part #: TMS4194
Price: $249.95 (USD) 
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E36 M3 1995 Turner Motorsport Conforti Stage 3 Performance Chip (HFM, Schrick cams, 24lb injectors) Tuned specially for an E36 M3 with the Euro HFM, "24lb" fuel injectors, and Schrick camshafts. This chip is necessary when upgrading your engine with these parts. Conforti mapped this chip on the dyno to maximize the gains when using more aggressive camshafts and "24lb" injectors and to prevent the engine from running lean at high RPM. This chip provides a smooth power delivery from low RPM up to redline. The minimum octane required to run this chip is 91. A new 7000 RPM rev limit and elimination of the top speed limiter are other features. Works with manual transmission cars only.

Turner Performance Chips provide the ultimate in performance advantage! Adding a performance chip to your BMW is the easiest and most cost effective way of increasing BMW power, torque, and performance with NO DOWNSIDES. Through years of BMW performance tuning, we are able to maximize power and torque gains for 91 octane fuel used in North America. By making changes in the ignition and fuel maps of the DME we are able to optimize performance with no side effects or compromises. Other changes will make your BMW smoother and more responsive than when it left the factory. Our chips have a lifetime warranty and a 30-day satisfaction guarantee. If for any reason you are not fully satisfied with the increase in power and overall drivability you can return the chip to Turner Motorsport for a full refund. Chips are supplied with detailed instructions and are user-installed in about an hour. See below for specific information that we may need from your BMW model.

You can also use this chip in E30 S50/S52 engine conversions but we recommend using it with the Speed Sensor Delete feature unless you have the speed sensor wired correctly from the dash to the ECU.

Required Vehicle Info
E36 M3 95Production date (MM/YY)

This performance chip fits the following BMWs:
1995 E36 BMW M3
Part #: TMS93
Price: $349.00 (USD) 
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E34 M5 Turner Conforti Performance Chip

Adding a Turner Performance Chip gives you the biggest bang for your buck! Jim Conforti tuned these chips on the dyno to boost mid range torque and increase horsepower in the upper RPM range. While not exactly producing V8-levels of torque you will definitely like the 38ft-lb increase at 3500 RPM - right at the start of the power band. The best thing is that there is NO downside to installing a TMS Performance Chip. Turner Motorsport has been in the BMW chip business for close to 10 years and all chips are dyno-tuned to achieve optimum performance and safety. As an added feature, the top speed limiter is removed. Premium 91+ octane fuel is required.

Turner Performance Chips provide the ultimate in performance advantage! Adding a performance chip to your BMW is the easiest and most cost effective way of increasing BMW power, torque, and performance with NO DOWNSIDES. Through years of BMW performance tuning, we are able to maximize power and torque gains for 91 octane fuel used in North America. By making changes in the ignition and fuel maps of the DME we are able to optimize performance with no side effects or compromises. Other changes will make your BMW smoother and more responsive than when it left the factory. Our chips have a lifetime warranty and a 30-day satisfaction guarantee. If for any reason you are not fully satisfied with the increase in power and overall drivability you can return the chip to Turner Motorsport for a full refund. Chips are supplied with detailed instructions and are user-installed in about an hour.
 

Horsepower Gain:+39 @ 7,000 RPM

Torque Gain:+38 @ 3,500 RPM

New Rev Limit7,500
 

This performance chip fits the following BMWs:
1991-1993 E34 BMW M5 (US 3.6L)

Part #: 350-500
Price: $249.00 (USD) 
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E31 850CSi Turner Motorsport Conforti Performance Chip Set With the CSi BMW really turned out one of their finest engines. A touch more tuning by Bosch Motronic expert Jim Conforti yields just a little more punch from the big V12. Conforti altered the fuel and ignition mapping to take advantage of premium fuel (91+ octane). Although the 850CSi is required to run "premium" anyway, it is not optimized for it. Changing these settings results in more power and a smoother-running engine.

Turner Performance Chips provide the ultimate in performance advantage! Adding a performance chip to your BMW is the easiest and most cost effective way of increasing BMW power, torque, and performance with NO DOWNSIDES. Through years of BMW performance tuning, we are able to maximize power and torque gains for 91 octane fuel used in North America. By making changes in the ignition and fuel maps of the DME we are able to optimize performance with no side effects or compromises. Other changes will make your BMW smoother and more responsive than when it left the factory. Our chips have a lifetime warranty and a 30-day satisfaction guarantee. If for any reason you are not fully satisfied with the increase in power and overall drivability you can return the chip to Turner Motorsport for a full refund. Chips are supplied with detailed instructions and are user-installed in about an hour.

Horsepower Gain:+12 @ 5,300 RPM
Torque Gain:+20 @ 4,000 RPM
New Rev LimitEML controls redline

Click here for a dyno chart!

This performance chip fits the following BMWs:
1994-1995 E31 BMW 850CSi
Part #: E31850CSi
Price: $399.95 (USD) 
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E30 M3 2.3-liter Turner Motorsport Conforti Performance Chip Adding a TMS Performance Chip gives you the biggest bang for your buck! Jim Conforti tuned these chips on the dyno to boost mid range torque and increase horsepower in the upper RPM range. While not exactly producing V8-levels of torque you will definitely like the power increase across the rev band. The best thing is that there is NO downside to installing a Turner Performance Chip. urner Motorsport has been in the BMW chip business since 1995 and all chips have been dyno-tuned to achieve optimum performance and safety. As an added feature, the top speed limiter is removed. Premium 91+ octane fuel is required.

Turner Performance Chips provide the ultimate in performance advantage! Adding a performance chip to your BMW is the easiest and most cost effective way of increasing BMW power, torque, and performance with NO DOWNSIDES. Through years of BMW performance tuning, we are able to maximize power and torque gains for 91 octane fuel used in North America. By making changes in the ignition and fuel maps of the DME we are able to optimize performance with no side effects or compromises. Other changes will make your BMW smoother and more responsive than when it left the factory. Our chips have a lifetime warranty and a 30-day satisfaction guarantee. If for any reason you are not fully satisfied with the increase in power and overall drivability you can return the chip to Turner Motorsport for a full refund. Chips are supplied with detailed instructions and are user-installed in about an hour.

Horsepower Gain:+24 @ 7,600 RPM
Torque Gain:+19 @ 6,000 RPM
New Rev Limit7,800 RPM


This performance chip fits the following BMWs:
1988-1991 E30 BMW M3 (US 2.3L)
Part #: 071-000
Price: $249.00 (USD) 
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E31 840ci Turner Motorsport Conforti Performance Chip Adding a TMS Performance Chip gives you the biggest bang for your buck! Jim Conforti tuned these chips on the dyno to boost mid range torque and increase horsepower in the upper RPM range. Where the stock V8 seems to fall flat above 5500 RPM, the adjusted fuel and spark maps deliver more horsepower to keep the engine pulling all the way up to the new 7000 RPM rev limit. The best thing is that there is NO downside to installing a Turner Performance Chip. Turner Motorsport has been in the BMW chip business for 20 years and all chips are dyno-tuned to achieve optimum performance and safety. As an added feature, the top speed limiter is removed. Premium 91+ octane fuel is required.

Turner Performance Chips provide the ultimate in performance advantage! Adding a performance chip to your BMW is the easiest and most cost effective way of increasing BMW power, torque, and performance with NO DOWNSIDES. Through years of BMW performance tuning, we are able to maximize power and torque gains for 91 octane fuel used in North America. By making changes in the ignition and fuel maps of the DME we are able to optimize performance with no side effects or compromises. Other changes will make your BMW smoother and more responsive than when it left the factory. Our chips have a lifetime warranty and a 30-day satisfaction guarantee. If for any reason you are not fully satisfied with the increase in power and overall drivability you can return the chip to Turner Motorsport for a full refund. Chips are supplied with detailed instructions and are user-installed in about an hour. Click here for installation instructions.

Horsepower Gain:+19 @ 3,000 RPM
Torque Gain:+33 @ 3,000 RPM
New Rev Limit*7,000 RPM

Required Vehicle Info
E31 840i/ci 93-95Bosch ECU part number, beginning with "0 261"
Confirmation that the code "1744050" is on a label on the ECU cover

* Transmission Note: our chip's increase the engine rev limit set in the DME. The computer for the automatic transmission has its own limiter that restricts engine RPM to preserve the automatic transmission internals. Our chip will still increase horsepower and torque with the automatic but the stock rev limit will remain.

This item fits the following BMWs:
1993-1995 E31 BMW 840i 840ci
Part #: E31840CHIP
Price: $249.95 (USD) 
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EWS-Delete Chip For Bosch 413 ECU With Silver Label
FOR AN EWS DME IN A CAR THAT DOES NOT HAVE EWS-II
See below for a list of common cars and chassis that this chip would be used in.

A lot of times when building a racecar or doing an engine conversion the EWS-II system can get in the way, adding another layer of complexity to the job. Since racecars and engine conversions have been such a big part of our history, we developed a special chip to eliminate the EWS-II system from the Bosch silver 413 DME. This chip is perfect for someone who bought an EWS-II computer without realizing what the system requires. The chip will de-activate the EWS-II code inside the DME thereby allowing you to use it in a car that did not have EWS-II or on a racecar that has the EWS-II removed completely (EWS module and key). It also has all of the benefits of the "regular" Conforti Performance Chips - more horsepower and torque, increased rev limit (7000 rpm), top speed limiter removed, etc. In the past you would have had to buy a non-EWS DME. This chip saves you both time and money. Click here to learn more about EWS-II.

Turner Performance Chips provide the ultimate in performance advantage! Adding a performance chip to your BMW is the easiest and most cost effective way of increasing BMW power, torque, and performance with NO DOWNSIDES. Through years of BMW performance tuning, we are able to maximize power and torque gains for 91 octane fuel used in North America. By making changes in the ignition and fuel maps of the DME we are able to optimize performance with no side effects or compromises. Other changes will make your BMW smoother and more responsive than when it left the factory. Our chips have a lifetime warranty and a 30-day satisfaction guarantee. If for any reason you are not fully satisfied with the increase in power and overall drivability you can return the chip to Turner Motorsport for a full refund. Chips are supplied with detailed instructions and are installed in about an hour. See below for specific information that we may need from your BMW.

Important Note: This EWS-delete chip is not intended to bypass EWS-II or as a workaround for a problematic EWS-II system. With this chip, no EWS-II components can be in the car. In other words, you cannot use this chip to bypass the EWS-II on a 1995 M3 because the EWS is having problems. This chip is only for using that DME in a car that never had EWS-II to begin with.

Required Vehicle Info
AllConfirm the ECU is a Bosch 0 261 203 413 with a silver label

Common EWS-Delete Applications:
1986-1992 E30 BMW 3-series with M50, S50, or S52 engine conversion
1992-12/1994 E36 BMW 3-series with M50, S50, or S52 engine
1989-12/1994 E34 BMW 5-series with M50, S50, or S52 engine
Part #: TMS4228
Price: $299.95 (USD) 
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E23 735i, E32 735i/iL Turner Motorsport Conforti Performance Chip The TMS Performance Chip for the 735i/iL is designed to produce large quantities of torque in a very usable RPM range. Jim Conforti tuned these chips on the dyno and altered the fuel and spark parameters to get better output. The result is over 20ft-lbs of torque gain at only 2000 RPM and a broader power band all the way up to redline. Installing a TMS Performance Chip is a safe upgrade even on high mileage cars as the changes are made to optimize the engine for premium fuel (91 or higher). The top speed limiter is removed and the rev limit is raised (manual transmission model only).

Turner Performance Chips provide the ultimate in performance advantage! Adding a performance chip to your BMW is the easiest and most cost effective way of increasing BMW power, torque, and performance with NO DOWNSIDES. Through years of BMW performance tuning, we are able to maximize power and torque gains for 91 octane fuel used in North America. By making changes in the ignition and fuel maps of the DME we are able to optimize performance with no side effects or compromises. Other changes will make your BMW smoother and more responsive than when it left the factory. Our chips have a lifetime warranty and a 30-day satisfaction guarantee. If for any reason you are not fully satisfied with the increase in power and overall drivability you can return the chip to Turner Motorsport for a full refund. Chips are supplied with detailed instructions and are user-installed in about an hour. See below for specific information that we may need from your BMW model.

1985-1987 735i M30B34
Horsepower Gain:+24 @ 5,000 RPM
Torque Gain:+29 @ 2,000 RPM
New Rev Limit6,600 RPM

1988-1992 735i/iL M30B35
Horsepower Gain:+43 @ 6,250 RPM
Torque Gain:+21 @ 2,000 RPM
New Rev Limit6,800 RPM


Required Vehicle Info
E23 735i 85-87Bosch ECU part number, beginning with "0 261"
For Bosch ECU "0 261 200 059", we need to know the number of pins on the original chip.

E32 735i/iL 88-92Bosch ECU part number, beginning with "0 261"
manual or automatic transmission

This item fits the following BMWs:
1985-1987 E23 BMW 735i
1988-1992 E32 BMW 735i 735il
Part #: 735CHIPS
Price: $249.00 (USD) 
E30 318i,is 1990-91 Turner Motorsport Conforti Performance Chip

Need to breath more life into your engine? Add a Turner Performance Chip! These chips were tuned by Jim Conforti on the dyno to maximize the engine's efficiency when using 91 octane gasoline. The result is more horsepower and better torque - especially in the mid-range of the RPM band. The car really feels more alive!

Turner Performance Chips provide the ultimate in performance advantage! Adding a performance chip to your BMW is the easiest and most cost effective way of increasing BMW power, torque, and performance with NO DOWNSIDES. Through years of BMW performance tuning, we are able to maximize power and torque gains for 91 octane fuel used in North America. By making changes in the ignition and fuel maps of the DME we are able to optimize performance with no side effects or compromises. Other changes will make your BMW smoother and more responsive than when it left the factory. Our chips have a lifetime warranty and a 30-day satisfaction guarantee. If for any reason you are not fully satisfied with the increase in power and overall drivability you can return the chip to Turner Motorsport for a full refund. Chips are supplied with detailed instructions and are user-installed in about an hour.

Horsepower Gain: +12 @ 5,500 RPM
Torque Gain: +15 @ 2,500 RPM
New Rev Limit: 7,000 RPM

This performance chip fits the following BMWs:
1989-1992 E30 BMW 318i 318is 318ic

Part #: 175-300
Price: $249.95 (USD) 
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E31 850CSi Turner Motorsport Conforti Performance Chip Set

With the CSi BMW really turned out one of their finest engines. A touch more tuning by Bosch Motronic expert Jim Conforti yields just a little more punch from the big V12. Conforti altered the fuel and ignition mapping to take advantage of premium fuel (91+ octane). Although the 850CSi is required to run "premium" anyway, it is not optimized for it. Changing these settings results in more power and a smoother-running engine.

Turner Performance Chips provide the ultimate in performance advantage! Adding a performance chip to your BMW is the easiest and most cost effective way of increasing BMW power, torque, and performance with NO DOWNSIDES. Through years of BMW performance tuning, we are able to maximize power and torque gains for 91 octane fuel used in North America. By making changes in the ignition and fuel maps of the DME we are able to optimize performance with no side effects or compromises. Other changes will make your BMW smoother and more responsive than when it left the factory. Our chips have a lifetime warranty and a 30-day satisfaction guarantee. If for any reason you are not fully satisfied with the increase in power and overall drivability you can return the chip to Turner Motorsport for a full refund. Chips are supplied with detailed instructions and are user-installed in about an hour.
 

Horsepower Gain:+12 @ 5,300 RPM

Torque Gain:+20 @ 4,000 RPM

New Rev LimitEML controls redline


Click here for a dyno chart!

This performance chip fits the following BMWs:
1994-1995 E31 BMW 850CSi

Part #: 069-800
Price: $399.95 (USD) 
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E34 525i 89-90 Turner Conforti Performance Chip

Need to breath more life into your engine? Add a Turner Performance Chip! These chips were tuned by Jim Conforti on the dyno to maximize the engine's efficiency when using 91 octane gasoline. The result is more horsepower and better torque - especially in the mid-range of the RPM band. Just because your car is a heavy 5-series doesn't mean you can't make the car faster, more responsive, andsmoother-running. The car really feels more alive! There are several different chip options, please let us know if your car has any modifications.

Turner Performance Chips provide the ultimate in performance advantage! Adding a performance chip to your BMW is the easiest and most cost effective way of increasing BMW power, torque, and performance with NO DOWNSIDES. Through years of BMW performance tuning, we are able to maximize power and torque gains for 91 octane fuel used in North America. By making changes in the ignition and fuel maps of the DME we are able to optimize performance with no side effects or compromises. Other changes will make your BMW smoother and more responsive than when it left the factory. Our chips have a lifetime warranty and a 30-day satisfaction guarantee. If for any reason you are not fully satisfied with the increase in power and overall drivability you can return the chip to Turner Motorsport for a full refund. Chips are supplied with detailed instructions and are user-installed in about an hour. Click here for installation instructions. See below for specific information that we may need from your BMW model.

1989-1990 E34 525i Power Gains:
Hp Gain: +15 @ 5,000 RPM
Trq Gain: +15 @ 5,000 RPM
New Rev Limit: 6,900 RPM

Required Vehicle Info
Bosch ECU part number: beginning with "0 261"
Transmission: manual or automatic

This performance chip fits the following BMWs:
1989-1990 E34 BMW 525i (M20 engine)

Part #: E34-M20-CHIP
Price: $249.00 (USD) 
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E36 325i, E34 525i Turner Motorsport Peformance Chip (2.5L with M3 Cams) If you've installed M3 cams in your 325i but have not gotten this Performance Chip then you're missing out on half of the horsepower. This Performance Chip is tuned to take full advantage of using these cams on the 325i. You can expect huge gains in the top end of the RPM band but thanks to this chip's dyno tuning there is no loss of low-mid range torque. You get seamless power delivery fromlow RPM all the way up to the 7000 RPM rev limit. Jim Conforti achieved this by altering the fuel and spark maps along with the cam timing to take full advantage of premium 91+ octane fuel. The rev limit is raised and the top speed limiter is removed.

Turner Performance Chips provide the ultimate in performance advantage! Adding a performance chip to your BMW is the easiest and most cost effective way of increasing BMW power, torque, and performance with NO DOWNSIDES. Through years of BMW performance tuning, we are able to maximize power and torque gains for 91 octane fuel used in North America. By making changes in the ignition and fuel maps of the DME we are able to optimize performance with no side effects or compromises. Other changes will make your BMW smoother and more responsive than when it left the factory. Our chips have a lifetime warranty and a 30-day satisfaction guarantee. If for any reason you are not fully satisfied with the increase in power and overall drivability you can return the chip to Turner Motorsport for a full refund. Chips are supplied with detailed instructions and are user-installed in about an hour. See below for specific information that we may need from your BMW model.

Required Vehicle Info
E36 325i/is/ic 93-94
E34 525i 93-94
No additional info required.
E36 325i/is/ic 95
E34 525i 95
Production date (MM/YY)

This performance chip fits the following BMWs:
1993-1995 E36 BMW 325i 325is 325ic
1993-1995 E34 BMW 525i
Part #: 413-252
Price: $349.00 (USD) 
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E36 318i/is 1992-1995 Turner Motorsport Conforti Performance Chip The 318i/is needs more torque - pure and simple. A little extra grunt in the bottom-end of the RPM range will get your 318 moving quicker in traffic. The torque gain for this engine starts at only 2500 RPM! If you're looking for a significant bump in power you need not look any further than a TMS Performance Chip. Jim Conforti tuned this chip to take advantage of 91+ octane gas. By altering the fuel and spark curves greater horsepower and torque can be achieved as well as making the engine run smoother and better responsive. There is no downside - only an awakened engine and a car with new life!

Turner Performance Chips provide the ultimate in performance advantage! Adding a performance chip to your BMW is the easiest and most cost effective way of increasing BMW power, torque, and performance with NO DOWNSIDES. Through years of BMW performance tuning, we are able to maximize power and torque gains for 91 octane fuel used in North America. By making changes in the ignition and fuel maps of the DME we are able to optimize performance with no side effects or compromises. Other changes will make your BMW smoother and more responsive than when it left the factory. Our chips have a lifetime warranty and a 30-day satisfaction guarantee. If for any reason you are not fully satisfied with the increase in power and overall drivability you can return the chip to Turner Motorsport for a full refund. Chips are supplied with detailed instructions and are user-installed in about an hour. See below for specific information that we may need from your BMW model.

Horsepower Gain:+11 @ 5,500 RPM
Torque Gain:+19 @ 3,600 RPM
New Rev Limit6,900

Required Vehicle Info
E36 318i/is/ic 92-94Bosch ECU part number, beginning with "0 261"
Transmission: manual or automatic
E36 318i/is/ic 95Bosch ECU part number, beginning with "0 261"
Production date (MM/YY)
Transmission: manual or automatic

This performance chip fits the following BMWs:
1992-1995 E36 BMW 318i 318is 318ic 318ti
Part #: E36318
Price: $249.95 (USD) 
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E28 528e, E30 325e Turner Motorsport Conforti Performance Chip

The 2.7 liter inline-6 is a torquey car, however, performance drops off greatly after 4000 RPM. With a Turner Performance Chip power is boosted at all RPM but most importantly in the upper RPM. The car really feels more alive! This chip was tuned on the dyno to yield as much performance from this engine as possible and still maintain its strength and durability. Jim Conforti tuned the fuel and park maps to take advantage of 91 octane gasoline. By making the engine more efficient with this fuel, gains in horsepower and torque are achieved as well as making the engine run smoother.

Turner Performance Chips provide the ultimate in performance advantage! Adding a performance chip to your BMW is the easiest and most cost effective way of increasing BMW power, torque, and performance with NO DOWNSIDES. Through years of BMW performance tuning, we are able to maximize power and torque gains for 91 octane fuel used in North America. By making changes in the ignition and fuel maps of the DME we are able to optimize performance with no side effects or compromises. Other changes will make your BMW smoother and more responsive than when it left the factory. Our chips have a lifetime warranty and a 30-day satisfaction guarantee. If for any reason you are not fully satisfied with the increase in power and overall drivability you can return the chip to Turner Motorsport for a full refund. Chips are supplied with detailed instructions and are user-installed in about an hour. See below for specific information that we may need from your BMW model.

Horsepower Gain +24 @ 4,500 RPM

Torque Gain: +28 @ 4,500 RPM

New Rev Limit: 5,300 RPM

NOTE: your car may have a replacement DME ending in 021. Our chips will work in this replacement computer as long as the existing chip is not soldered.

This item fits the following BMWs:
1985-1987 E30 BMW 325e 325es
1985-1987 E28 BMW 528e with build date of 09/1984 up to 09/1987

Part #: 027-000
Price: $199.00 (USD) 
Quantity:   
E32 750iL Turner Motorsport Conforti Performance Chip Set If you're looking for a significant bump in power you need not look any further than a TMS Performance Chip. Designed to maximize the advantage of premium fuel, Performance Chips safely alter the fuel and timing maps which results in more power and a smoother engine. These chips were tuned by Jim Conforti on the dyno with fantastic results. What you feel is more power starting at 3500 RPM and continuing up to redline. There is no downside - only an awakened engine and a car with new life!

Turner Performance Chips provide the ultimate in performance advantage! Adding a performance chip to your BMW is the easiest and most cost effective way of increasing BMW power, torque, and performance with NO DOWNSIDES. Through years of BMW performance tuning, we are able to maximize power and torque gains for 91 octane fuel used in North America. By making changes in the ignition and fuel maps of the DME we are able to optimize performance with no side effects or compromises. Other changes will make your BMW smoother and more responsive than when it left the factory. Our chips have a lifetime warranty and a 30-day satisfaction guarantee. If for any reason you are not fully satisfied with the increase in power and overall drivability you can return the chip to Turner Motorsport for a full refund. Chips are supplied with detailed instructions and are user-installed in about an hour. Click here for installation instructions. See below for specific information that we may need from your BMW model.

Horsepower Gain:+29 @ 5,500 RPM
Torque Gain:+35 @ 3,600 RPM
New Rev LimitEML controls redline

Click here for a dyno chart!

Required Vehicle Info
E32 750iL 89-95Bosch ECU part number, beginning with "0 261"

This performance chip fits the following BMWs:
1989-1995 E32 BMW 750iL
Part #: E32750
Price: $249.00 (USD) 
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E34 525i, E36 325 1993-1995 Turner Conforti Performance Chip

Horsepower Gain: +22 @ 6,000 RPM
Torque Gain: +20 @ 4,000 RPM
New Rev Limit: 7,000

If you're looking for a significant bump in power you need not look any further than a TMS Performance Chip. Designed to maximize the advantage of premium fuel, Performance Chips safely alter the fuel and timing maps which results in more power and a smoother engine. These chips were tuned by Jim Conforti on the dyno with fantastic results. What you feel is more power starting at 3500 RPM and continuing up to the new rev limit of 7000. There is no downside - only an awakened engine and a car with new life!

Performance software is the key to unlocking the power that BMW left on the table. For the US market the factory software is set for 87 octane fuel. But the engine is capable of producing so much more! We make adjustments to the fuel, ignition, and camshaft timing data at part throttle and full throttle to take advantage of premium 91+ octane fuel. We dial in the settings so that more power is made at all RPM. What you'll notice is more power and torque at wide open throttle and even when driving around town. The engine will run smoother with better throttle response and less hesitation. We keep the factory safeguards in place so there is no long term engine damage or negative side effects. It's not just gaining power back - it's better than when it left the factory!

We're also able to tune for all of the popular M50 engine upgrades -

  • lightweight flywheel - adds 100 RPM to idle
  • stock E36 M3 camshafts - these work GREAT for producing more top end power. We adjust the maps to take advantage of higher lift and duration
  • sport exhaust - additional tuning for cat-back exhausts​


Required Vehicle Info:

1993-1994 E34 525i: no additional information required
1995 E34 525i: production date (MM/YY)
1993-1994 E36 325i: no additional information required
1995 E36 325i: production date (MM/YY)

This item fits the following BMWs:
1993-1995 E36 BMW 325i 325is 325ic
1993-1995 E34 BMW 525i

Part #: 413-325
Price: $249.00 (USD) 
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E36 M3 1995 Turner Motorsport Conforti Performance Chip The E36 M3 benefits greatly from a TMS Performance Chip. Although premium fuel is recommended by BMW, the car is not optimized for it. Significant horsepower and torque gains can be had by switching to a Turner Chip and using 91+ octane fuel. Tuned specially for the E36 M3 on the dyno with Bosch expert Jim Conforti, this chip provides a smooth power delivery from low RPM up all the way up to redline. Conforti achieved this by altering the fuel and spark maps along with the cam timing to take full advantage of premium fuel. The result is a big boost in power, more usable torque, and a smoother-running engine. The rev limit is raised and the top speed limiter is removed. There are NO downsides to installing a TMS Performance Chip; it is FREE, easy-to-install horsepower.

Turner Performance Chips provide the ultimate in performance advantage! Adding a performance chip to your BMW is the easiest and most cost effective way of increasing BMW power, torque, and performance with NO DOWNSIDES. Through years of BMW performance tuning, we are able to maximize power and torque gains for 91 octane fuel used in North America. By making changes in the ignition and fuel maps of the DME we are able to optimize performance with no side effects or compromises. Other changes will make your BMW smoother and more responsive than when it left the factory. Our chips have a lifetime warranty and a 30-day satisfaction guarantee. If for any reason you are not fully satisfied with the increase in power and overall drivability you can return the chip to Turner Motorsport for a full refund. Chips are supplied with detailed instructions and are user-installed in about an hour. See below for specific information that we may need from your BMW model.

You can also use this chip in E30 S50/S52 engine conversions but we recommend using it with the Speed Sensor Delete feature unless you have the speed sensor wired correctly from the dash to the ECU.

Horsepower Gain:+19 @ 5,000 RPM
Torque Gain:+16 @ 3,500 RPM
New Rev Limit*7,000

Required Vehicle Info
E36 M3 95Production date (MM/YY)

* Transmission Note: our chip's increase the engine rev limit set in the DME. The computer for the automatic transmission has its own limiter that restricts engine RPM to preserve the automatic transmission internals. Our chip will still increase horsepower and torque with the automatic but the stock rev limit will remain.

This item fits the following BMWs:
1995 E36 BMW M3
Part #: E36M3CHIPS
Price: $249.00 (USD) 
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E32 740i/iL Turner Motorsport Conforti Performance Chip Adding a Turner Performance Chip gives you the biggest bang for your buck! Jim Conforti tuned these chips on the dyno to boost mid range torque and increase horsepower in the upper RPM range. Where the stock V8 seems to fall flat above 5500 RPM, the adjusted fuel and spark maps deliver more horsepower to keep the engine pulling all the way up to the new 7000 RPM rev limit. The best thing is that there is NO downside to installing a Turner Performance Chip. Turner Motorsport has been in the BMW chip business for close to 10 years and all chips are dyno-tuned to achieve optimum performance and safety. As an added feature, the top speed limiter is removed. Premium 91+ octane fuel is required.

Turner Performance Chips provide the ultimate in performance advantage! Adding a performance chip to your BMW is the easiest and most cost effective way of increasing BMW power, torque, and performance with NO DOWNSIDES. Through years of BMW performance tuning, we are able to maximize power and torque gains for 91 octane fuel used in North America. By making changes in the ignition and fuel maps of the DME we are able to optimize performance with no side effects or compromises. Other changes will make your BMW smoother and more responsive than when it left the factory. Our chips have a lifetime warranty and a 30-day satisfaction guarantee. If for any reason you are not fully satisfied with the increase in power and overall drivability you can return the chip to Turner Motorsport for a full refund. Chips are supplied with detailed instructions and are user-installed in about an hour. Click here for installation instructions. See below for specific information that we may need from your BMW model.

Horsepower Gain:+19 @ 3,000 RPM
Torque Gain:+33 @ 3,000 RPM
New Rev Limit*7,000 RPM

Required Vehicle Info
E32 740i/iL 93-95Bosch ECU part number, beginning with "0 261"
Confirmation that the code "1744050" or "1740732" is on a label on the ECU cover
Production date (MM/YY)

* Transmission Note: our chip's increase the engine rev limit set in the DME. The computer for the automatic transmission has its own limiter that restricts engine RPM to preserve the automatic transmission internals. Our chip will still increase horsepower and torque with the automatic but the stock rev limit will remain.

This item fits the following BMWs:
1993-1995 E32 BMW 740i 740iL
Part #: E32740CHIP
Price: $249.95 (USD) 
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E24 M6, E28 M5 Turner Motorsport Conforti Performance Chip

When the first M5 and M6 were brought to the U.S. they were de-tuned from their European brothers and sisters. That was a shame as the cars lost close to 40hp. But adding a Turner Performance Chip will get that lost horsepower back! Jim Conforti tuned these chips on the dyno to boost mid range torque and increase horsepower in the upper RPM range. As a result there is a 48 horsepower increase at 6000 RPM with a new rev limit of 7200 RPM! Conforti achieved this by tuning the car on the dyno, specifically changing the fuel and spark patterns in an effort to make the engine more efficient when burning 91+ octane fuel. Torque increases similarly in the heart of the powerband.

Turner Performance Chips provide the ultimate in performance advantage! Adding a performance chip to your BMW is the easiest and most cost effective way of increasing BMW power, torque, and performance with NO DOWNSIDES. Through years of BMW performance tuning, we are able to maximize power and torque gains for 91 octane fuel used in North America. By making changes in the ignition and fuel maps of the DME we are able to optimize performance with no side effects or compromises. Other changes will make your BMW smoother and more responsive than when it left the factory. Our chips have a lifetime warranty and a 30-day satisfaction guarantee. If for any reason you are not fully satisfied with the increase in power and overall drivability you can return the chip to Turner Motorsport for a full refund. Chips are supplied with detailed instructions and are user-installed in about an hour.
 

Horsepower Gain:+48 @ 6,000 RPM

Torque Gain:+32 @ 5,000 RPM

New Rev Limit7,200 RPM


This item fits the following BMWs:
1988 E28 BMW M5
1987-1989 E24 BMW M6

Part #: 079-000
Price: $249.00 (USD) 
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Quantity:   
E34 535i Turner Motorsport Conforti Performance Chip The 1989-93 535i is a powerful car, however, BMW didn’t spend any more time tuning the car than they had to. The Turner Performance Chip for this car was tuned on the dyno to yield as much performance from this engine as possible and still maintain its great reliability. Jim Conforti tuned the fuel and spark maps to take advantage of 91 octane gasoline. By making the engine more efficient with this fuel, gains in horsepower and torque are achieved as well as making the engine run smoother.

Turner Performance Chips provide the ultimate in performance advantage! Adding a performance chip to your BMW is the easiest and most cost effective way of increasing BMW power, torque, and performance with NO DOWNSIDES. Through years of BMW performance tuning, we are able to maximize power and torque gains for 91 octane fuel used in North America. By making changes in the ignition and fuel maps of the DME we are able to optimize performance with no side effects or compromises. Other changes will make your BMW smoother and more responsive than when it left the factory. Our chips have a lifetime warranty and a 30-day satisfaction guarantee. If for any reason you are not fully satisfied with the increase in power and overall drivability you can return the chip to Turner Motorsport for a full refund. Chips are supplied with detailed instructions and are user-installed in about an hour. See below for specific information that we may need from your BMW model.

Horsepower Gain:+43 @ 6,250 RPM
Torque Gain:+21 @ 2,000 RPM
New Rev Limit6,800

Required Vehicle Info
E34 535i 89-92Transmission: manual or automatic

This performance chip fits the following BMWs:
1989-1993 E34 BMW 535i
Part #: E34535
Price: $249.00 (USD) 
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E30 325i/ix 1987-92 Turner Motorsport Conforti Performance Chip Need to breath more life into your engine? Add a Turner Performance Chip! These chips were tuned by Jim Conforti on the dyno to maximize the engine's efficiency when using 91 octane gasoline. The result is more horsepower and better torque - especially in the mid-range of the RPM band. The car really feels more alive!

Turner Performance Chips provide the ultimate in performance advantage! Adding a performance chip to your BMW is the easiest and most cost effective way of increasing BMW power, torque, and performance with NO DOWNSIDES. Through years of BMW performance tuning, we are able to maximize power and torque gains for 91 octane fuel used in North America. By making changes in the ignition and fuel maps of the DME we are able to optimize performance with no side effects or compromises. Other changes will make your BMW smoother and more responsive than when it left the factory. Our chips have a lifetime warranty and a 30-day satisfaction guarantee. If for any reason you are not fully satisfied with the increase in power and overall drivability you can return the chip to Turner Motorsport for a full refund. Chips are supplied with detailed instructions and are user-installed in about an hour. See below for specific information that we may need from your BMW model.

Horsepower Gain:+15 @ 5,000 RPM
Torque Gain:+15 @ 5,000 RPM
New Rev Limit6,900 RPM


Required Vehicle Info
E30 325i/ix 87-92Bosch ECU part number, beginning with "0 261"
manual or automatic transmission
model year


This performance chip fits the following BMWs:
1987-1992 E30 BMW 325i 325ic 325is 325ix
Part #: E30325
Price: $249.95 (USD) 
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E24 635CSi Turner Motorsport Conforti Performance Chip The M30 3.5 inline-6 is a torquey motor, however it could be a little more powerful in the upper RPM range. With a Turner/Conforti Performance Chip power is boosted at all RPM with over 20ft-lbs of torque gain at only 2000 RPM. This chip was tuned on the dyno to yield as much performance from this engine as possible and still maintain its strength and durability. Jim Conforti tuned the fuel and spark maps to take advantage of 91 octane gasoline.

Turner Performance Chips provide the ultimate in performance advantage! Adding a performance chip to your BMW is the easiest and most cost effective way of increasing BMW power, torque, and performance with NO DOWNSIDES. Through years of BMW performance tuning, we are able to maximize power and torque gains for 91 octane fuel used in North America. By making changes in the ignition and fuel maps of the DME we are able to optimize performance with no side effects or compromises. Other changes will make your BMW smoother and more responsive than when it left the factory. Our chips have a lifetime warranty and a 30-day satisfaction guarantee. If for any reason you are not fully satisfied with the increase in power and overall drivability you can return the chip to Turner Motorsport for a full refund. Chips are supplied with detailed instructions and are user-installed in about an hour. See below for specific information that we may need from your BMW model.

Read other's impressions:
"I went with the Conforti that I bought from Turner and am very happy with it. There is no noticeable (to me) change in fuel consumption. I have slightly better pop in lower gears where , gawdknows, the car really needs it and the car certainly pulls faster and stronger at the top end." - Taylor, Montreal, Canada.

"I have just installed the Conforti/Turner chip, actually increased my gas mileage by 1 mpg, but the power curve is much better and the movement of the point in the RPM bad where the engine limits itself is so much nicer. I am very happy with the change." - Rick, California.

"I tried Dinan and BavAuto…I like Jim C's the best." - Joe, Connecticut.


1985-1988 635CSi M30B34
Horsepower Gain:+24 @ 5,000 RPM
Torque Gain:+29 @ 2,000 RPM
New Rev Limit6,600 RPM

1989 635CSi M30B35
Horsepower Gain:+43 @ 6,250 RPM
Torque Gain:+21 @ 2,000 RPM
New Rev Limit6,800 RPM


Required Vehicle Info
E24 635CSi 85-89Bosch ECU part number, beginning with "0 261"
For Bosch ECU "0 261 200 059", we need to know the number of pins on the original chip.
manual or automatic transmission


This performance chip fits the following BMWs:
1985-1989 E24 BMW 635csi
Part #: E24635
Price: $249.95 (USD) 
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