http://kitesolar.com/windy.htmI want to save gas too you know LeanBurn. But if high mileage is all you can achieve and you do all the hypermiling in the world it is not going save as much money unless you are running super unleaded. I wanted a truck. The Smart I am driving has 3 cylinders. It was a 999cc. I think if you look at the material it is now 2001 with the same top dead center and float you have lowered the compression. If your car you know knocked. It may do it afterwards too. If it gets the same mileage and has the same power like mine appeared to, at least it's a pain, but still might pay off but it is during a plug upgrade. Anyway, the mod is called gapped for '87.