Version 1.
Version 1.
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 +70 HP / +70 TQ
2X Entries For Our 25th Anniversary Sweepstakes!
Unlock the hidden potential from your BMW with a safe and easy to use module from RaceChip
Increase of +126 Horsepower, and +127 Torque! Eliminate top speed limiter, Increased throttle response. W.2 Tunes are designed for vehicles with performance high-flow exhausts!
Increase of +101 Horsepower, and +102 Torque, Eliminate top speed limiter, Increased throttle response. W.1 Tunes are designed for completely stock vehicles with no other modifications!
This product was last offered at the strikethrough price on
08-03-2026
Increase power without sacrificing reliability
This product was last offered at the strikethrough price on
08-03-2026