cool- I got to thinking a bit more about it and I can't say for sure but wouldn't the dyno numbers above change dramtically depending on what other mods the car might have?
I mean if you just put a header on a car that has a stock exhaust you would definately see much less of a gain that one with good 2.5/3" piping and a free flow cat.. and intake would change that too..
just a thought.. everything works together
ripthesystem