Originally Posted by 97Stallion
Once you start doing the internals of you engine, basicly everything from your throttle body to you headers, that's when you start really effecting your gas mileage. Simple things like a CAI or UD pulley can actually increase your gas mileage slightly as long as you don't have a lead foot. I was getting close to 33 mpg on the highway before my teardown. Now i get like 20 mpg.
Ditto, cept im getting more like 15 but thats running rich.
Yea I would say the easiest thing to do would be a centrifugal supercharger setup.
Vortech or w/e, I don't know much about them but Im sure others will agree.