Single Tune 2020-2023 Duramax L5P for HP Tuners Power Level::Sport Economy Requires an up-pipe for a

Requires an up-pipe for a full EGR "Upgrade"

Much wider torque curve

and enhance performance with the C6292PLM 4" down pipe back exhaust kit from P1 Race Products

Part number: T5126

and enhance performance with the S6126SLM 4" turbo pipe back exhaust kit from P1 Race Products

Single Tune 2020-2023 Duramax L5P for HP Tuners Power Level::Sport Economy Requires an up-pipe for aImprove the performance on your 2020, 2021, 2022, or 2023 Chevy Silverado or GMC Sierra. Hardware and credits are optional (if you already own them), but required to perform ECM tuning. Select the single power level below that best suits what you demand out if your vehicle. Single Tune Power Levels options are as follows: Optimized Stock Tune Refined factory settings Smoother running engine & power delivery Reduced exhaust temperatures Leaves factory