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Since established in 2004, GSP North America has positioned itself as a leading supplier of New Axles in North America.GSP’s new axle program consistently offers the best application coverage, most SKU count, and more new numbers than any other competitors. GSP’s hub assembly program was introduced to North America market in 2010 and has grown into one the most trustable programs in US market.
This item fits the following BMWs:
E24 BMW 633CSi M6
E28 BMW 524td 528e 533i 535i 535is M5
E34 BMW 530i 535i 540i M5
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
05-03-2026
When the first M5 and M6 were brought to the U.S. they were de-tuned from their European brothers and sisters. That was a shame as the cars lost close to 40hp. But adding a Turner Performance Chip will get that lost horsepower back! Jim Conforti tuned these chips on the dyno to boost mid range torque and increase horsepower in the upper RPM range. As a result there is a 48 horsepower increase at 6000 RPM with a new rev limit of 7200 RPM! Conforti achieved this by tuning the car on the dyno, specifically changing the fuel and spark patterns in an effort to make the engine more efficient when burning 91+ octane fuel. Torque increases similarly in the heart of the powerband.
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:+48 @ 6,000 RPM
Torque Gain:+32 @ 5,000 RPM
New Rev Limit7,200 RPM
This item fits the following BMWs:
1988 E28 BMW M5
1987-1989 E24 BMW M6
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
05-03-2026
Discover the effortless way to enhance your BMW's performance with the Turner Performance Chip. Dyno-tuned by the renowned BMW expert, Jim Conforti, this chip offers a gateway to increased power and torque, all while preserving the essence of your BMW. Explore the compelling features of this remarkable product:
This product was last offered at the strikethrough price on
05-15-2026
This product was last offered at the strikethrough price on
05-15-2026
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
05-03-2026
| 1985-1988 635CSi M30B34 | |
| Horsepower Gain: | +24 @ 5,000 RPM |
| Torque Gain: | +29 @ 2,000 RPM |
| New Rev Limit | 6,600 RPM |
| 1989 635CSi M30B35 | |
| Horsepower Gain: | +43 @ 6,250 RPM |
| Torque Gain: | +21 @ 2,000 RPM |
| New Rev Limit | 6,800 RPM |
| Required Vehicle Info | |
| E24 635CSi 85-89 | Bosch 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 | |
Since established in 2004, GSP North America has positioned itself as a leading supplier of New Axles in North America.GSP’s new axle program consistently offers the best application coverage, most SKU count, and more new numbers than any other competitors. GSP’s hub assembly program was introduced to North America market in 2010 and has grown into one the most trustable programs in US market.
This item fits the following BMWs:
E30 BMW M3
E28 BMW 524td 528e 533i 535i 535is M5
E24 BMW 633CSi 635CSi M6
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
05-03-2026
Enhance your BMW's performance effortlessly with the Turner Performance Chip—an answer to your power and torque needs. Dyno-tuned by BMW legend Jim Conforti, these chips optimize high-octane pump gas, elevating mid-range torque and high-RPM horsepower. Designed to safely boost performance, each chip includes detailed instructions for easy installation by enthusiasts with basic hand tools.
Turner Motorsport and Jim Conforti, with over 20 years of expertise, breathe life into your BMW through software tuning. Unlike eBay chips, Turner Performance Chips employ extensively tested fuel & spark maps, ensuring peak performance without compromising engine health or driveability. Since 1995, Jim Conforti has been a pioneer in BMW chip tuning, earning Turner Motorsport a reputation as the leader in the field. With over 10,000 units sold, trust the best for your BMW.
The legendary M30 "big six" engine excels in mid-range torque but craves more high-end power in stock form. The Turner Conforti Performance Chip steps in, refining weak points in the power curve and delivering impressive peak horsepower gains. Revel in a substantial mid-range torque boost that awakens your BMW without sacrificing its distinctive character.
Turner stands behind your satisfaction, offering a 30-day money-back guarantee on this product, serviced by ECS Tuning.
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
05-03-2026
| Wheel Specs | |
| Fitment: | Mostly Rear |
| Size: | 19x9.5" |
| Offset (mm): | 22 |
| Weight (lbs): | 22.9 |
| Profile: | 3, deep dish |
| Wheel Specs | |
| Fitment: | Mostly Rear |
| Size: | 19x10" |
| Offset (mm): | 25 |
| Weight (lbs): | 23.5 |
| Profile: | 3, deep dish |
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
This product was last offered at the strikethrough price on
05-07-2026
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
05-03-2026
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.
Turner Performance Chips lead the BMW chip tuning industry, ensuring your BMW gets the performance it deserves.
| Wheel Specs | |
| Fitment: | Front or Rear |
| Size: | 19x10.5" |
| Offset (mm): | 22 |
| Weight (lbs): | 23.9 |
| Profile: | 3, deep dish |
| Wheel Specs | |
| Fitment: | Front or Rear |
| Size: | 19x10.5" |
| Offset (mm): | 22 |
| Weight (lbs): | 23.9 |
| Profile: | 3, deep dish |
| Wheel Specs | |
| Fitment: | Mostly Rear |
| Size: | 19x9.5" |
| Offset (mm): | 22 |
| Weight (lbs): | 22.9 |
| Profile: | 3, deep dish |
| Wheel Specs | |
| Fitment: | Mostly Rear |
| Size: | 19x10" |
| Offset (mm): | 25 |
| Weight (lbs): | 23.5 |
| Profile: | 3, deep dish |
| Wheel Specs | |
| Fitment: | Mostly Rear |
| Size: | 19x9.5" |
| Offset (mm): | 43 |
| Weight (lbs): | 23 |
| Profile: | 2, moderate dish |
| Wheel Specs | |
| Fitment: | Front or Rear |
| Size: | 19x9.5" |
| Offset (mm): | 33 |
| Weight (lbs): | 22.5 |
| Profile: | 3, deep dish |
| Wheel Specs | |
| Fitment: | Front or Rear |
| Size: | 19x9.5" |
| Offset (mm): | 33 |
| Weight (lbs): | 22.5 |
| Profile: | 3, deep dish |
| Wheel Specs | |
| Fitment: | Front or Rear |
| Size: | 19x9.5" |
| Offset (mm): | 33 |
| Weight (lbs): | 22.5 |
| Profile: | 3, deep dish |
