JB4PRO for 2025+ C8 Chevrolet Corvette ZR1 LT7 - Burger Tuning rs3tuning Unlock your engine's full potential

Unlock your engine's full potential with a reliable upgrade that supports both performance and durability

Custom Build: Due to the various configurations available for Stage 3

(2) 90º 1/2" barbed fittings

Designed to deliver 15-20 horsepower gains

JB4PRO for 2025+ C8 Chevrolet Corvette ZR1 LT7 - Burger Tuning rs3tuning Unlock your engine's full potentialPower 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