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 Robert Lemons
Does as advertised.
Pretty good product, works pretty much as advertised but takes a few cycles for the truck to pick up the unit and start working. You may need to unplug the battery and let the computer turn off the cycle before it picks up the device.
- Consistent test results
- Could have opted for a newer model
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