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)

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

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.

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

Turner Performance Chip: Unleash Your BMW's Hidden Power

Elevate your BMW's performance effortlessly with the Turner Performance Chip, your answer to increased power and torque. Dyno-tuned by BMW tuning legend Jim Conforti, this high-quality chip is meticulously designed to make the most of high-octane (91+) pump gas, delivering impressive mid-range torque and high-RPM horsepower. Discover the compelling features of this remarkable product:

• Unlock your BMW's hidden potential with the Turner Performance Chip, designed for optimal use of high-octane (91+) pump gas. This chip is your key to experiencing remarkable mid-range torque and high-RPM horsepower, meticulously tuned by the legendary Jim Conforti.
• Enjoy the thrill of improved performance as the Turner Performance Chip raises the rev limit and fine-tunes fuel and spark maps, surpassing your BMW's factory performance levels. The result is a safer, more drivable, and highly responsive vehicle.
• Experience an easy installation process, aided by detailed instructions. Enthusiasts with basic hand tools can typically complete the installation in just an hour.
• Turner Motorsport and Jim Conforti bring over 20 years of expertise in BMW software tuning to your service. Their commitment to quality stands out, as the Turner Performance Chips feature meticulously tested and carefully designed fuel and spark maps, ensuring peak performance without compromising engine integrity or drivability.
• Jim Conforti, an esteemed figure in the field, has been perfecting the BMW driving experience since 1995. With over 10,000 units sold, he is widely recognized as the leader in BMW chip tuning. Choose the best for your BMW and avoid imitations.
• The BMW M20 inline six engine is celebrated for its durability and ease of maintenance. Jim Conforti leverages these strengths to find additional power and torque without compromising the engine's legendary reliability. Upgrade your M20 with the Turner Conforti Performance Chip for newfound power.
• Key Performance Metrics: - Horsepower Gain: +15 @ 5,000 RPM - Torque Gain: +15 @ 5,000 RPM - New Rev Limit: 6,900 RPM
• Rest assured with included installation instructions, ensuring a straightforward process for enthusiasts.
• Turner's confidence in the product's ability to enhance power, torque, and overall performance is backed by a 30-day money-back guarantee, supported by ECS Tuning.