Review on 🚀 Advanced Performance Chip/Power Programmer for Chevrolet HHR 2.0L, 2.2L, and 2.4L - Enhance Fuel Efficiency, Save Gas & Boost MPG, Amplify Horsepower & Torque! by Marquez Hinshaw

I installed this product on a 2008 Chevy HHR Lt with a 2.4L engine and full cat back exhaust system with Airaid induction. The increase in gas mileage was incredible: 5 to 7 mpg. Light horsepower set was a simple 35 horsepower boost. This product is a real gem. It mixes the fuel to air ratio perfectly as throttle response, adding to our incredible value on this product. You can't go wrong. Try it and be sure that it really works