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.
Max gains of up to +69 HP and +81 lb-ft TRQ (Crank); +62 HP and +73 lb-ft TRQ (Wheel).
Call In Or Chat For Best Price! 5X Entries For Our 25th Anniversary Sweepstakes!
Non Competition Package models
Non Competition Package models
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
07-20-2026
Plug & play power — gain up to 40 horsepower on a stock car, 70+ horsepower on a modified car!
Not for sale or use in the state of California.
This product was last offered at the strikethrough price on
05-19-2026
Gains of up to 45hp and 60lb/ft!
Not for sale or use in the state of California.
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.
Add an Install Kit to Your Motiv ReFlex Control Unit!
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.
Max gains of up to +69 HP and +81 lb-ft TRQ (Crank); +62 HP and +73 lb-ft TRQ (Wheel).
Call In Or Chat For Best Price! 5X Entries For Our 25th Anniversary Sweepstakes!
Competition Package models
Competition Package models ONLY
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
07-20-2026
Increase of +170 Horsepower, and +294 Torque! Eliminate top speed limiter, Increased throttle response. W.2 Tunes are designed for vehicles with performance exhausts & high-flow air filters!
This software is only compatible with Windows PC / Laptop.
Increase of +121 Horsepower, and +269 Torque! Eliminate top speed limiter, Increased throttle response. W.1 Tunes are designed for completely stock vehicles with no other modifications!
This software is only compatible with Windows PC / Laptop. CARB certified for sale in all 50 states.
2025+
Increase power with this plug-and-play tuning module! Gains of up to +60 HP & +70 Nm (+52 ft lbs)
For CS models only
Increase power with this plug-and-play tuning module! Gains of up to +70 HP & +110Nm (+81 ft lbs)
For Competition package only
Increase power with this plug-and-play tuning module! Gains of up to +79 HP & +100 Nm (+74 ft lbs)