http://forums.nasioc.com/forums/show...hreadid=577384

This simply amazes me.

I'm a believer now. This along with the results that San has seen make me want to do a whole lot of research on headers.

 

VERY interesting. I've thought about them before, but only as a "finishing" touch to the rest of the mods. Looks like more reading to do tonight!

Edit: WHOA!! $995!!!!!

 

were cheap. And I had them and my downpipe ceramic coated at Hi Tech. I think once I actually do some tuning with my UTEC, my car will be really fast.

San

 

Which headers did you get? Did you feel a difference when you installed them? I've always read that the stock headers aren't restrictive, and don't make too much of a difference except on Stage 4 and above cars. My big question is if the real difference is in the integrated uppipe design, rather than getting something like the Gruppe-S headers.

 

The reading I've been doing on heads convinces me that both the heads and headers can be made significantly less restrictive.