Review on Optimize Your Vehicle's Performance with Chip Your Car Stage 3 Performance Chip - Boost Up to 60 HP and Gain 5 MPG by Vincent Burton

I bought it from a website online it made my fuel economy worse than better. I bought a Stage 3 but it made my SUV louder and faster and my transmission ran much smoother. I should have tried to contact the company but never did. I only bought it because in the 50 reviews I read there are 2 different mechanics, one with 7 years experience the other with over 10 years experience both of whom gave positive reviews.