Replacement JB4 OBDII cable suitable for use in all applications where the JB4 attaches to the OBDII port under the dash.
Replacement JB4 OBDII cable suitable for use in all applications where the JB4 attaches to the OBDII port under the dash.
Version 1.
Get up to +75 hp and +105 lb-ft through a safe and easy to use app-controlled tuning module from RaceChip
Increase power without sacrificing reliability
For vehicles with production date up to 03/2011
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
07-28-2026
Increase power without sacrificing reliability
Add up to 40hp and 80lbs/ft. torque to your N55 today!
For vehicles with production date from 03/2011
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
07-28-2026
Increase power without sacrificing reliability
Adds up to 40hp and 51lbs. x ft. torque - instantly!
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
07-28-2026
This add on kit for BMW N54 engines allows your JB4 to "2step" the engine
Plug & play power — gain up to 40 horsepower in under one minute! 50 state legal performance!
CARB Approved - Legal in All 50 States! CARB certified for sale in all 50 states
A piggy back tuner that allows you to adjust throttle response for peak performance.
Get up to +51 hp and +70 lb-ft through a safe and easy to use tuning module from RaceChip *Open Box - New Product*
This product was last offered at the strikethrough price on
07-21-2026
Unlock the hidden potential from your BMW with a safe and easy to use module from RaceChip. Options for both harness types A and B
BMW used two different engine harnesses, please confirm if you have type A or B before ordering
Instant boost!
Replacement JB4 OBDII cable suitable for use in all applications where the JB4 attaches to the OBDII port under the dash. Includes JB4 side repair harness molex pigtail.
A great package for a new care owner looking to gain more power
Includes Cobb High Flow Filter, Front Mount Intercooler, and AccessPORT V3.
Increase performance without sacrificing reliability
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
07-28-2026