Post by
Zebrahead »
https://forums.nicoclub.com/zebrahead-u480.html
Sat Sep 14, 2002 8:57 am
You don't NEED 3" piping with a turboed engine. That is a myth. If you plan to run more than ~300HP, then you do. But if you plan on running a stock SR20, or CA18, then 2.5" should be just fine. Ask Daunt, he'll back me up. I'm sure 3" couldn't hurt, but don't feel that you can ONLY choose 3" exhausts.
I'm very pleased with my HKS Hiper. It looks great, is very deep, and not ricey, and I saw a significant performance gain. Good quality stuff from a very reputable company. It was kinda expensive though. $565 installed (I didn't have the time).
Nick.