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779 Review
71 Karma

Review on πŸš€ Fuel-Efficient and High-Performance Performance Chip/Power Programmer for GMC Sierra 2500 & 3500 6.6L Duramax Turbo Diesel - Enhance MPG, Save on Fuel Costs, Amplify Horsepower & Torque! by Eddie Duncan

Revainrating 1 out of 5

not worth it in engines and engine parts

installed on my 08 LMM Duramax went from 15mpg highway to 11mpg highway, took it off and back to almost 15, didn't work for my truck. sorry I didn't spend any money on it.

Pros
  • Absolute legend
Cons
  • Hard to tell