Banks Power 2020 GM 2500/3500 6.6L L5P Derringer Tuner (Gen 2) - Requires iDash

Results in torque and power gains across the full operating rpm range, starting right off idle and marching to the shift point in each gear. Derringer is dyno calibrated to use multiple data inputs such as throttle position, rpm, vehicle speed, AFR, knock, coolant temperature, and EGT, just like your engine's ECM. It actively and safely optimizes calibrations in real-time thanks to its OBD-II connectivity. No competitive tuner does that.

• Adds 81 hp, 144 lb-ft