Header Finished., What is to be expected. Options

[n1ckz0r]

So I finished my header-back exhaust about a week ago and was wondering how much of a difference i should have seen if any? I had two cats before, and I beleive eitehr 1.75-2.00" pipe. I replaced all of that for 2.25" pipe with only 1 highflow cat. PLUS headers. Just wondering if anybody can tell me a rough estimate of how to see if it made a difference. I know before all of that my car wouldnt leave patches at stop signs, now it does easily. maybe a zero-sixty test? Anybody have numbers to compare it to?

This post has been edited by n1ckz0r: Nov 3, 2006 - 10:11 PM

[Bigmeanbulldog55]

You should have picked up a few hp across the intire range of rpms, depending on header style. This also increases throttle response. It also helps if you want to do future mods, you now have the exhaust to support it. Your engine can flow easy enough to handle a nitrous shot, if you want that. I would work on a little suspension mods and try to autoX the car. Celica's are great for that. You've probably picked up a nice amount of torque, maybe 5-10ft-lbs. That's what helps you.