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E34 Performance Chips: 1985-1995 Cars

 Description:  Our most popular product, hands down! Most of our Performance Chips have been developed by Bosch Motronic tuning expert Jim Conforti, with a few custom-tuned by TMS on our in-house Dynapack chassis dyno. They provide the ultimate in performance! Adding a performance chip to your car is the easiest, most cost effective way of increasing your BMWs performance with NO downsides. TMS performance chips are supplied with detailed instructions and are user installed in about an hour. The performance chip optimizes ignition timing and fuel curves which results in increased horsepower and torque. We have dyno tested these chips and compared it to all the others and found it to provide the most horsepower and usable torque. Must use 91 octane or higher gasoline. All chips are warranted for as long as you own your BMW and also come with a 30 day performance guarantee; if for any reason you are not fully satisfied with the increase in power and overall driveability you can return the chip to TMS for a full refund. CLICK HERE BEFORE ORDERING YOUR CHIP.

TMS has over 210 unique chip files in the 2008 catalog! To download the ALL-NEW 2008 application list of Turner Motorsport Performance Chips, click here (Adobe .pdf file).

Shipping: FREE UPS 2nd Day shipping is included with any TMS chip priced $249.95 or higher shipped within the 48 states. Free shipping done at time of checkout. Please note: Should you opt for Next Day shipping, additional shipping charges will be applied when the order is processed.

Upgrade your TMS chip to any of our custom chips for free if exchanged within six months. After six months the upgrade fee is only $100!

Turner Motorsport (TMS) Chip Trade-in Policy: TMS chips are upgradeable to custom versions for free for 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 purchaser of the chip and only applies if the upgrades you are installing were purchased from TMS. If the parts that require a custom chip are sourced elsewhere other than TMS, the upgrade program does not apply. 


We offer Performance Chips: 1985-1995 Cars for the following BMWs (click to change)

 E30 Performance Chips: 1985-1995 Cars E36 Performance Chips: 1985-1995 Cars E28 Performance Chips: 1985-1995 Cars E34 Performance Chips: 1985-1995 Cars E24 Performance Chips: 1985-1995 Cars E32 Performance Chips: 1985-1995 Cars E31 Performance Chips: 1985-1995 Cars
APPLICATIONS YEAR   DESCRIPTION PRICE BUY

larger 		E34 525i 1989-95 Turner Motorsport Conforti Performance Chip
 525i (E34) 		1989-1995 Need to breath more life into your engine? Add a TMS 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, and smoother-running. The car really feels more alive!

Horsepower Gain, 1989-90 + 15 @ 5000 RPM
Torque Gain, 1989-90 + 15 @ 5000 RPM
New Rev Limit, 1989-90 7000 RPM
Horsepower Gain, 1991-92 + 20 @ 6000 RPM
Torque Gain, 1991-92 + 13 @ 4500 RPM
New Rev Limit, 1991-92 7000 RPM
Horsepower Gain, 1993-95 + 22 @ 6000 RPM
Torque Gain, 1993-95 + 20 @ 4000 RPM
New Rev Limit, 1993-95 7000 RPM

For 1989-90 525i we need to know the ECU number from the car, and we need to know if the car is a manual or automatic. Choose the options from the list below.

If the car is a 1991-92, we need to know the ECU number. Choose the appropriate option from the box below.

If the car is a 1993-94, there is nothing that we need to know about the car.

For a 1995 525i, we need to know the production date of the car. Please enter this information on your order form.


ECU #:
My car is a:
Transmission:
 		$249.95

larger 		E34 530i/540i Turner Motorsport Conforti Performance Chip
 530i/540i (E34) 		1993-1995 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 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.

Please click here before ordering. We need to know the ECU numbers, transmission type, and production date of your car so it is recommended that you call your order in at 800-280-6966.

New Installation Instructions! Click here.

Horsepower Gain, 530i + 23 @ 6000 RPM
Torque Gain, 530i + 23 @ 3000 RPM
New Rev Limit, 530i 7000 RPM
Horsepower Gain, 540i + 19 @ 3000 RPM
Torque Gain, 540i + 33 @ 3000 RPM
New Rev Limit, 540i 7000 RPM
$249.95

larger 		E34 535i Turner Motorsport Conforti Performance Chip
 535i (E34) 		1989-1992

The 1989-93 535i is a powerful car, however, BMW didn’t spend any more time tuning the car than they had to. The TMS 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.

Horsepower Gain

+ 43 @ 6250 RPM

Torque Gain

+ 21 @ 2000 RPM

New Rev Limit

6800 RPM

For the 535i, we need to know if the car is a manual or automatic.


Transmission:
 		$249.95

larger 		E34 M5 1991-93 Turner Motorsport Conforti Performance Chip
 M5 (E34) 		1991-1993 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 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.

Horsepower Gain

+ 39 @ 7000 RPM

Torque Gain

+ 38 @ 3500 RPM

New Rev Limit

7500 RPM

User review:
"Thanks TMS!!! I received and installed the TMS 'chip' into my weekend toy a 1991 M5. It dropped the ide from 1000 to 750, I swear it brought the torque curve down. It definitely smoothed out the old girl and put the mpgs on the rise. The limiter is up to, I don’t know where, but I buried it in the red in thrid gear. For such a simple upgrade the results are remarkable and for the price theres no way to beat it. All my fellow enthusiasts definitely say they can tell a change. I am all to thrilled with this purchase. I thank you again TMS! You will be seeing my business in the future. Keep up the good work. Thanks. -Nathan W. Bailey
 		$249.95

larger 		E36 325, E34 525 TMS Peformance Chip, 2.5 with M3 Cams
 325i, 525i (E36 E34) 		1993-1995 TMS Performance Chip for E36 325i and M3 Camshafts
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 from low 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.
Production Year
 		$349.95

 

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