Unlock the hidden potential from your BMW with a safe and easy to use module from RaceChip
Unlock the hidden potential from your BMW with a safe and easy to use module from RaceChip
A piggy back tuner that allows you to adjust throttle response for peak performance.
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.
Next-Gen Power Delivery with OEM-Level Integration - up to +55 HP / +60 TQ
2X Entries For Our 25th Anniversary Sweepstakes!
For Pre-LCI models with the Gen1 B46 engine (B46A)
Upgrade From Your Outdated Batch-Fire Injector Controller!