Hypertech Max Energy for 2001-05 Duramax

The Most Powerful Tuning You Can Buy! The Max Energy Power Programmer extracts every bit of energy possible out of every molecule of fuel giving you more mpg at part throttle and more power at wide open throttle. All this and more... Adjustable features depend on year, make, and model of vehicle.

Three-Stage Power Tuning

Special Three-Stage Tuning for Select Vehicles

Speedometer/Odometer Correction for Tire Size Changes

Automatically corrects speedometer and odometer readings for non-stock tire sizes and/or non-stock rear-end gear ratios (accurate odometer readings are required by law)

Reads, Displays and Clears Diagnostic Trouble Codes (DTCﾒs) The Diagnostics program reads, explains, and clears diagnostic trouble codes (DTC's).