Review on π Innovative Performance Chip/Power Programmer for GMC Sierra 1500 2.7L, 3.0L, 4.3L, 4.8L, 5.0L, 5.3L, 5.7L, 6.0L, 6.2L engines - Enhance Fuel Efficiency, Save Gas & Boost MPG, Amplify Horsepower & Torque! by Hayden Hart
Waste of money, reduced mileage 2mpg
Does not work. Installed on my 2015 GMC Sierra 5.3L V8 and it brought my mileage down and started throwing a Throttle Position Sensor DTC. Easy installation, exactly according to the instructions. Was there two weeks and was 2mpg lower than before. Turned it off and my mileage was back to normal. Unfortunately it was a waste of time and money.
- Hands-free operation
- Very expensive
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