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

Unleash the true potential of your BMW effortlessly with the Turner Performance Chip—the ultimate solution for adding power and torque. Dyno-tuned by BMW tuning legend Jim Conforti, these chips are meticulously designed to maximize the benefits of high-octane (91+) pump gas, elevating mid-range torque and high-RPM horsepower. Experience an optimized driving performance as the chip raises the rev limit and fine-tunes fuel and spark maps, ensuring your BMW outperforms its factory configuration. There's no compromise with the Turner Performance Chip; each chip is engineered for safe performance improvement, maintaining driveability, and enhancing responsiveness. Detailed instructions accompany every chip, making installation a straightforward process, typically taking just an hour for enthusiasts using hand tools.

Turner Motorsport and Jim Conforti, with over 20 years of experience, redefine your BMW's performance through meticulous software tuning. Unlike eBay chips, Turner Performance Chips feature extensively tested fuel & spark maps, maximizing your BMW's potential without risking engine damage or sacrificing driveability. Since 1995, Jim Conforti has been a driving force in fine-tuning the BMW experience, finding more power and torque while enhancing throttle response. With over 10,000 units sold, Jim Conforti is hailed as the leader in BMW chip tuning—don't settle for imitators; your BMW deserves the best.

The E36 M3, a pinnacle of performance and luxury, takes a leap with the Turner Conforti Performance Chip. Addressing the US-market E36 M3's power disparity with its European counterpart, this chip delivers impressive gains in both horsepower and torque where you need it most.

• Horsepower Gain: +19 @ 5,000 RPM
• Torque Gain: +16 @ 3,500 RPM
• New Rev Limit: 7,000 RPM
• Tuning options for popular aftermarket upgrades available; contact your sales rep for details.
• Easy installation with included instructions.

Turner is so confident in the transformative power, torque, and overall performance of this product that they offer a 30-day money-back guarantee, serviced by ECS Tuning.

BMW E36 Turner Conforti Performance Chip

Unleash the full potential of your BMW E36 with the BMW E36 Turner Conforti Performance Chip. Engineered for maximum performance and reliability, this performance chip optimizes engine tuning for increased horsepower and torque. Experience smoother acceleration and improved throttle response with this easy-to-install upgrade. Upgrade your BMW E36 with this premium Turner Conforti Performance Chip today.

• Optimizes engine tuning for increased horsepower and torque
• Provides smoother acceleration
• Improves throttle response for enhanced driving experience
• Easy-to-install upgrade for BMW E36 models

Enhance your BMW's performance effortlessly with the Turner Performance Chip—the ultimate solution for adding power and torque. Engineered by BMW tuning maestro Jim Conforti, these chips are tailored to optimize high-octane (91+) pump gas, delivering exceptional mid-range torque and high-RPM horsepower. Discover the benefits of the Turner Performance Chip:

• Safely improves performance without compromising driveability
• Fine-tuned fuel and spark maps for enhanced factory performance
• Shipped with detailed instructions for easy installation by enthusiasts
• Over 20 years of expertise from Turner Motorsport and Jim Conforti
• Extensively tested to extract maximum performance from your BMW
• Proven track record with over 10,000 units sold
• Notable gains in horsepower and torque at 7,500 RPM and 4,500 RPM
• New RPM limit set at an impressive 7,700 RPM
• 30-day money-back guarantee for confidence in your purchase

Turn your BMW into a powerhouse with the Turner Performance Chip—the trusted choice for uncompromised performance and reliability.

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

Elevate your BMW's performance effortlessly with the Turner Performance Chip, the ultimate answer for adding power and torque. Dyno-tuned by BMW legend Jim Conforti, these chips optimize high-octane (91+) pump gas, enhancing mid-range torque and high-RPM horsepower. The rev limit is raised, and fuel and spark maps are fine-tuned, ensuring your BMW outperforms its factory settings without compromising driveability. Designed for easy installation, each chip is shipped with detailed instructions, making it a quick, hands-on upgrade for enthusiasts.

• 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: +43 @ 6,250 RPM, Torque Gain: +21 @ 2,000 RPM
• New Rev Limit: 6,800 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.

Unlock the hidden power of your BMW effortlessly with the Turner Performance Chip. Dyno-tuned by BMW legend Jim Conforti, these chips optimize high-octane (91+) pump gas, boosting mid-range torque and high-RPM horsepower. Fine-tuned fuel and spark maps ensure your BMW performs better than ever, all without compromising driveability. With over 20 years of expertise, Turner Motorsport and Jim Conforti bring you a chip that's not just a performance upgrade but a reliability guarantee.

• Dyno-tuned by BMW legend Jim Conforti for optimal performance
• Designed to maximize 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
• Extensively tested and carefully designed for BMW performance
• M70 V12 chip unlocks more high-RPM horsepower and mid-range torque
• Horsepower Gain: +29 @ 5,500 RPM, Torque Gain: +35 @ 3,600 RPM
• Easy installation with included detailed instructions
• 30-day money-back guarantee for confidence in your purchase

Turner Performance Chips - the leader in BMW chip tuning, ensuring your BMW gets the best it deserves.