I'm glad there are people like Tom and others here who actually know specifics about tuning...I could only give an account about how the tuning of my car has helped MPG's and help make my Focus have better performance. Because of tuning my car at a reputable shop (DynoSpeed Racing) I have the advantage of going in and they always check out my car if something seems amiss. This should be a good Forum, if like it has been said dangerous and incorrect information doesn't bombard the forum...
