Originally Posted by Zeoth
Originally Posted by STY
If anyone has experience with new headers, is it a noticeable power increase?
Does it require the exhaust to be modified to realize any improvements?
If it makes me a little bit stronger off the line, I am definitely signed up.
Yes there is noticeable power increase but not that 25% that someone mentioned. Basically like everything else, honed headers properly proportioned will increase efficiency of the engine. That equates to power increase with MPG increase (under normal condition not foot to the floor kind of driving).
As for noise, there really isn't much of a noise increase with a stock exhaust. You will get a slight different tone because the exhaust is now flowing slight bit differently but it's nothing like an exhaust system. To get the full power gain (from just basic bolt-ons) you must change the intake to headers, to a full cat back exhaust. Size matters but larger is not better. Just remember that hot air flows faster and if you remember your physics, PV=nRT.
The person who mention 25% was me. OK, it might be pushing it a little, sot of. But how long would you think after you guys get those headers in will you last without adding a K&N intake, dual pipes all the way to the rear. tinkering at the OBC.
Yep, I said the same thing years ago. I told my wife: "This is the last mod, after this I'll put away the tool box and that is the end if it"
Yeah, tell me about it. We are all humans and we all want it better, and faster and cooler, and better performance, better handling, and better tires, better wheels. The bug will eventually sting you. It's a question of what's available. We (or you) will go for it. Which is cool. 8). Like they say in my country "Te habla la voz de la experiencia"
which mean: "We spoke to the voice of experience"
BTW, who doesn't want to be cool?