#6963, "RE: downpipe......YES or NO" In response to In response to 6
Originally posted by eclipzGST
Originally posted by 1fastpos Most aftermarket downpipes delete your cat. Yes buy the downpipe. Port the o2 housing and exhaust manifold too.
Actually, not many do at all... Don't go porting anything yet. You're still on the stock turbo. It'll be awhile before you NEED porting.
Tony if that statement was true then he certainly doesnt need a 3" exhaust or a downpipe for a t25. But since he wants to get maximum exhaust flow he should port the o2 housing and stock manifold.