Plug & play power — gain up to 60 horsepower on a stock car, 100+ horsepower on a modified car! For 2012 and newer vehicles.
Not for sale or use in the state of California.
Plug & play power — gain up to 60 horsepower on a stock car, 100+ horsepower on a modified car! For 2012 and newer vehicles.
Not for sale or use in the state of California.
Remove the dead area from your throttle pedal.
Remove the throttle lag and get more instant response.
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
07-21-2026
Quick and reliable power from a name you know and trust!
Call In Or Chat For Best Price! 5X Entries For Our 25th Anniversary Sweepstakes!
Maximum gains of up to 40 HP and 70 ft-lb of torque!
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
07-21-2026
Replacement JB4 OBDII cable suitable for use in all applications where the JB4 attaches to the OBDII port under the dash.
Version 1.
An average gain of 47whp and 58ft-lbs of torque!
Flash your ECU and unleash the power your BMW was meant to have.
CARB certified for sale in all 50 states
For BMWs with a model year up to 2011 only, will not work with 2012+ models
Get up to +75 hp and +105 lb-ft through a safe and easy to use app-controlled tuning module from RaceChip
An average gain of 47whp and 58ft-lbs of torque!
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
01-28-2026
Increase power 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
07-21-2026
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
01-28-2026
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
Plug & play power — gain up to 60 horsepower in under one minute!