BMW 5 Series E34 (1987-1995)

Enhance your BMW's power and torque effortlessly with the Turner Performance Chip, the ultimate answer to performance prayers. Dyno-tuned by BMW legend Jim Conforti, these chips are crafted to optimize high-octane (91+) pump gas, boosting mid-range torque and high-RPM horsepower. The rev limit is raised, and fuel and spark maps are meticulously fine-tuned to elevate your BMW's performance without compromising reliability.

• Dyno-tuned by BMW legend Jim Conforti for optimal performance
• Designed to maximize high-octane (91+) pump gas
• Raises the rev limit for increased performance
• Fine-tuned fuel and spark maps for enhanced power
• Maintains driveability and improves responsiveness
• Shipped with detailed instructions for easy installation
• Turner Motorsport and Jim Conforti's 20+ years of expertise
• Over 10,000 units sold, backed by a 30-day money-back guarantee
• Total performance upgrade for BMW's M50 engine

Experience a horsepower gain of +20 @ 6,000 RPM, a torque gain of +13 @ 4,500 RPM, and a new rev limit of 7,000 RPM. Trust in Turner's confidence with a 30-day money-back guarantee serviced by ECS Tuning.

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

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.

Transform your BMW effortlessly with the Turner Performance Chip – the ultimate solution for adding power and torque. Crafted by BMW tuning legend Jim Conforti, these chips are meticulously designed to maximize high-octane (91+) pump gas, elevating mid-range torque and high-RPM horsepower. The rev limit is raised, and fuel and spark maps are fine-tuned, ensuring your BMW outshines its factory performance. No compromises – each Turner Performance Chip is engineered to safely enhance performance while maintaining driveability and responsiveness. Shipped with detailed instructions, enthusiasts can typically install these chips within an hour using hand tools.

• Dyno-tuned by BMW legend Jim Conforti for optimal performance
• Designed for high-octane (91+) pump gas
• Boosts mid-range torque and high-RPM horsepower
• Fine-tuned fuel and spark maps for enhanced power
• Maintains driveability and improves responsiveness
• Easy installation with detailed instructions included
• Horsepower Gain: +19 @ 6,000 RPM, Torque Gain: +33 @ 3,000 RPM
• New Rev Limit: 7,000 RPM for an exhilarating driving experience
• 30-day money-back guarantee for confidence in your purchase

Turner Performance Chips lead the BMW chip tuning industry, ensuring your BMW gets the performance it deserves.

Enhance your BMW's power and torque effortlessly with the Turner Performance Chip—an answer to your prayers for a dynamic driving experience. Tuned by BMW legend Jim Conforti, these chips are tailored for high-octane (91+) pump gas, optimizing mid-range torque and high-RPM horsepower. Fine-tuned fuel and spark maps elevate your BMW's performance, ensuring it surpasses factory standards without drawbacks. Designed for safe performance improvement, each chip maintains driveability and responsiveness. Shipped with detailed instructions, enthusiasts can typically install these chips within an hour using hand tools.

• Dyno-tuned by BMW legend Jim Conforti for optimal performance
• Tailored for high-octane (91+) pump gas
• Boosts mid-range torque and high-RPM horsepower
• Fine-tuned fuel and spark maps for enhanced performance
• Safe performance enhancement with no downsides
• Easy installation with detailed instructions included
• Impressive gains: Horsepower +15 @ 5,000 RPM, Torque +15 @ 5,000 RPM
• 30-day money-back guarantee for confident purchasing

Turner Motorsport and Jim Conforti, with over 20 years of expertise, lead the BMW chip tuning industry, ensuring your BMW gets the best it deserves.

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)