JB4PRO for 2025+ C8 Chevrolet Corvette ZR1 LT7 - Burger Tuning Xterra Go from sounding 100% stock

Go from sounding 100% stock to an exotic exhaust system for a fraction of the cost with just one click of a button

• View and record up to 40 different gauges/engine parameters in real-time with the JB4 app

Bmw 328i 2012 to 2014

The Precision Raceworks VW / AUDI EA888

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JB4PRO for 2025+ C8 Chevrolet Corvette ZR1 LT7 - Burger Tuning Xterra Go from sounding 100% stockPower gains of up to 100whp peak and 220whp under the curve! JB4 is finally here for your C8 ZR1 Corvette! Featuring our latest JB4PRO hardware this system attaches to easy to reach connections in the engine bay, as well as your OBDII port, to retune the LT7 for higher power and torque levels. By intercepting and altering specific sensor signals dynamically the JB4 can safely reshape your boost, timing, and AFR profiles without having to unlock the