UCRaccordV6 said:some headers can add that much, i don tknow about hat one thogh
ppl sayihng that comptech headers for the accord adds like 20=+hp
You are comparing a V-6 to the I-4 which is no comparisson. 20HP from a header is a big stretch for a V-6, for an I-4 I'd say it's nearly impossible. Rather the only way I would believe it is to see the dyno for myself.
Adding I/H/E only adds modest gains overall. I'd say on a good day, with all three, you'd be lucky to get 6 to 8 HP on a stock engine.
One thing a lot people don't realize is that just bolting something onto your engine doesn't automatically give you the gains you are "guaranteed" to get for the advertisement. You could bolt on a header and intake that don't work well with each other and end up losing more power than you had with the stock setup. Or one could offset the other and no gains are achieved at all. That is why in magazines like SCC they always baseline dyno the car first and then start adding mods and dynoing after each mod.
Dyno tuning is the only way you can truely achieve any real gains.
$2500 for a header, that guy must be nuts. For not a lot more he could have bought a turbo charger and actually had something to brag about.