Made in the USA, the JB4 adds significant power and torque to your vehicle and is the ultimate PLUG & PLAY option for people that don't want to ECU tune.

The JB4 allows you to go from factory stock to full race, and everywhere in between. The JB4 installs and removes easily and includes many unique features not found in any other tune including user-adjustable 1st and 2nd gear boost limiting, smartphone integration, electronic wastegate control, ethanol fuel support, and built-in advanced CANbus based diagnostic tools. Installation is easy and completely removable with no splicing or cutting of factory wires with a 5 year warranty.