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BMW E34 M5 Performance Chips, 1986-1995 Models

BMW E34 M5 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. 

You're currently viewing parts for your (E34) M5 1991-1993. Reset your chassis
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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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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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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