Density Speed and Performance - TCM Tuning - HP Tuners - 2017-2023 L5P Duramax

Custom Tuning built for your 2017-2023 L5P Duramax to suit your build, loaded via HP Tuners.

TCM Tuning

Revised shift schedule to improve drive-ability

Improved shift timing

Re-designed torque converter lock-up strategy

Allows power transfer from the engine to the wheels more directly via TCC lock-up