Headers
Safety Car
Joined: Feb 2004
Posts: 3,786
Likes: 0
From: Minneapolis MN
It all depends. The manufacturer can spin there clams many ways. For instance if you squeeze off a 500hp motor with factory manifolds and then put headers on it you may gain 25hp. Headers are a great starting point for modding your car. They should give you a seat of your pants boost in hp and they will compliment any future mods.
As for shorty's don't even bother
As for shorty's don't even bother
Safety Car
Joined: May 2003
Posts: 4,283
Likes: 0
From: Houston Texas
Stock to Hooker shorties and Corsa catback I noticed a very small difference in the upper rpms. Mostly the noise makes it seem bigger. Then went with TPIS long tubes, high flow cats and Flowmaster catback and really noticed a difference. Car seemed to rev quicker which basically is faster acceleration. HP all depends in what else you have going with mods. I would think there would be a small amount of hp to gain with 1 3/4 shorties but not with 1 5/8. If I lived in a place they did visuals for inspections I would stay with shorties.
