Superchips Flashpaq (BGND-2866-F)

Up to 28 RWHP/50 RWTQ over stock on 93 octane fuel

Correct Speedometer for Tire Size

Set final drive ratio

Adjust Rev Limiter

Set Idle RPM in Drive/Neutral

Remove Speed Limiter

Adjust Throttle Sensitivity

Recall Last Mode Setting

Front/Rear TPMS Threshold Adjustment

Transmission Adaptive Relearn

Crank Position Sensor Relearn

Control Intake Filter Monitor system

Unlock and tune your 2020-2023 GM L8T powered truck at home with our 2866-R Flashpaq kit! We provide our industry exclusive Locksmith device and ECM harness with our popular Flashpaq handheld device to give you the ability to tune without removing the ECM. Once unlocked, the provided tunes can add solid power to your 6.6L gas truck, while also improving throttle response, shifting, and more. Tunes for 87 octane, and premium fuel are provided, as well as tunes for the 6 speed transmissions. We even provide adjustments like throttle boost, speed limiter and tire size to name a few!