Quote Originally Posted by speedminded
I need tuning on the C5 w/ just a VAFC I and ST Corsa cam gears...need the bung welded on too.

What effect is running the straight pipe with cat and resonator going to have on it? I guess kill the topend results?
itll be ok, i suggest running open header and then bolting your exhaust back on, the differences are usually a few whp up top. but a resonator and cat will prob hold back 4-7whp