HPTuners 2001-16 Duramax Tunes

DURAMAX HPTUNERS CUSTOM TUNES

At Auto Diesel Systems, we deliver professional HPTuners custom tuning solutions engineered specifically for your 2001-2016 Duramax. Our expert tuning unlocks maximum performance while maintaining reliability.

Available Tune Options:

Please specify the tune(s) you are looking for. Most common tunes are:

• 0hp Stock Power - Optimized factory calibration
• 25hp Tow (With brake torque management if LLY+) - Perfect for hauling and towing
• 45hp Economy - Maximize fuel efficiency
• 75hp Street (transmission tune suggested) - Daily driver performance
• 90hp Performance - Aggressive street performance
• 120hp Race - Maximum power output

**Transmission tuning for line pressure changes strongly suggested for 75hp+ tunes**

*Transmission tuning available for LWN and LML Duramax's*
*2001-2010 Dmax's we do not build transmission tunes unless the transmission is an upgraded build*

Auto Diesel Systems Transmission Tuning Features:

Our professional trans tuning includes the following features:

• Modified Shift Speeds - RPM/speed at which the shift is commanded
• Modified Shift Timing - Time it takes to complete a shift
• Improved TCC Lockup Strategy - Enhanced efficiency and performance
• Increased Line Pressure at all times (Similar to what the EPC fooler does)
• Improved Torque Management - Both during shifts and in gear, as well as the ability to tweak the trans tuning to individual customer's request