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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. 


E28 528e, E30 325e Turner Motorsport Conforti Performance Chip
E28 528e, E30 325e Turner Motorsport Conforti Performance Chip ...
The 2.7 liter inline-6 is a torquey car, however, perform...
Turner Conforti Performance Chips - Corporate Logo
T#:359446
Part#: 027-000
In Stock
$199.00
Free Shipping

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

E24 M6, E28 M5 Turner Motorsport Conforti Performance Chip
E24 M6, E28 M5 Turner Motorsport Conforti Performance Chip ...
When the first M5 and M6 were brought to the U.S. they we...
Turner Conforti Performance Chips - Corporate Logo
T#:359479
Part#: 079-000
In Stock
$249.00
Free Shipping

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

E34 M5 Turner Conforti Performance Chip
E34 M5 Turner Conforti Performance Chip
Adding a Turner Performance Chip gives you the biggest ba...
Turner Conforti Performance Chips - Corporate Logo
T#:386160
Part#: 350-500
In Stock
$249.00
Free Shipping

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)


E30 318i,is 1990-91 Turner Motorsport Conforti Performance Chip
E30 318i,is 1990-91 Turner Motorsport Conforti Performance Chip ...
Need to breath more life into your engine? Add a Turner P...
Turner Conforti Performance Chips - Corporate Logo
T#:359588
Part#: 175-300
In Stock
$249.95
Free Shipping

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


E30 325i/ix 1987-92 Turner Motorsport Conforti Performance Chip
E30 325i/ix 1987-92 Turner Motorsport Conforti Performance Chip ...
Need to breath more life into your engine? Add a Turner P...
Turner Motorsport - Corporate Logo
T#:340134
Part#: E30325
In Stock
Starting at $249.95
Free Shipping
Starting at $249.95
Free Shipping
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
E34 525i, E36 325 1993-1995 Turner Conforti Performance Chip
E34 525i, E36 325 1993-1995 Turner Conforti Performance Chip ...
Horsepower Gain Up To: +22 @ 6,000 RPMTorque Gain Up To: ...
Turner Conforti Performance Chips - Corporate Logo
T#:339971
Part#: 413-325
In Stock
Starting at $249.00
Free Shipping
Starting at $249.00
Free Shipping

Horsepower Gain Up To: +22 @ 6,000 RPM
Torque Gain Up To: +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 exhaustsaEUR<


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


E30 M3 2.3-liter Turner Motorsport Conforti Performance Chip
E30 M3 2.3-liter Turner Motorsport Conforti Performance Chip ...
Adding a TMS Performance Chip gives you the biggest bang ...
Turner Conforti Performance Chips - Corporate Logo
T#:4046
Part#: 071-000
In Stock
$249.00
Free Shipping
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)
E34 525i 91-95 Turner Conforti Performance Chip
E34 525i 91-95 Turner Conforti Performance Chip
Need to breath more life into your engine? Add a Turner P...
Turner Motorsport - Corporate Logo
T#:340148
Part#: E34525
In Stock
Starting at $249.00
Free Shipping
Starting at $249.00
Free Shipping
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)

E36 325i 1992 Turner Motorsport Conforti Performance Chip
E36 325i 1992 Turner Motorsport Conforti Performance Chip
A Turner Performance Chip for the 1992 E36 325i is an abs...
Turner Conforti Performance Chips - Corporate Logo
T#:339967
Part#: TMS4194
In Stock
Starting at $249.95
Free Shipping
Starting at $249.95
Free Shipping

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 Up To:+20 @ 6,000 RPM

Torque Gain Up To:+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


E28 535i Turner Motorsport Conforti Performance Chip
E28 535i Turner Motorsport Conforti Performance Chip
The 3.5 inline-6 is a torquey car, however, it could be a...
Turner Conforti Performance Chips - Corporate Logo
T#:340131
Part#: E28535
In Stock
Starting at $249.00
Free Shipping
Starting at $249.00
Free Shipping

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 Up To:+24 @ 5,000 RPM

Torque Gain Up To:+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

E30 M3 2.5-liter Turner Motorsport Conforti Performance Chip
E30 M3 2.5-liter Turner Motorsport Conforti Performance Chip ...
This is the same Conforti-tuned performance chip develope...
Turner Conforti Performance Chips - Corporate Logo
T#:4119
Part#: 071-250
In Stock
$249.00
Free Shipping

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)

E23 735i, E32 735i/iL Turner Motorsport Conforti Performance Chip
E23 735i, E32 735i/iL Turner Motorsport Conforti Performance Chip ...
The TMS Performance Chip for the 735i/iL is designed to p...
Turner Conforti Performance Chips - Corporate Logo
T#:339979
Part#: 735CHIPS
Available
Sale - Save 20% $253.95
Starting at $203.16
Sale - Save 20% $253.95
Starting at $203.16

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 Up To:+43 @ 6,250 RPM

Torque Gain Up To:+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



E34 535i Turner Motorsport Conforti Performance Chip
E34 535i Turner Motorsport Conforti Performance Chip
The 1989-93 535i is a powerful car, however, BMW didn&...
Turner Motorsport - Corporate Logo
T#:340149
Part#: E34535
In Stock
Starting at $249.00
Free Shipping
Starting at $249.00
Free Shipping
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