Fits: 2001 thru 2005 Chevy Silverado/GMC Sierra 2500HD/3500HD LB7/LLY Duramax Diesel 

Great choice for Duramax owners looking to increase fuel economy, add significant power gains, and speedometer adjustments for those new larger tires. Very easy to install or remove without detection at dealership visits. A great system thoroughly tested and proven by the DmaxStore available for 2001-2010 Duramax diesels.

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... Only from Hypertech!

Features:

• Performance Gains:
  • Stage 3: +87HP +173TQ
  • Stage 2: +52HP +108TQ
  • Stage 1: +32HP +68TQ

• Maximum Horsepower & Torque
• Improved Fuel Economy
• Internet Updateable (USB included)
• Easy Plug-And-Play Installation
• 3 Power Levels
• Removes Top-Speed
• Tire Size - 26"-42"
• Rear Gear (2006-07 Model Years Only)
• DTC's

Includes: 

• Max Energy Power Programmer

Notes: 

• 50 State Legal CARB E.O. D-260-22