2.5 or 2.25 exhaust

[S13wanabe]

Is a 2.5 inch exhaust too big for an NA motor? It's an LS/Vtec with pr3 pistons. Would I be better off with a 2.25 inch exhaust?

[SiGNAL748]

It really depends on the motor. Bigger motors like h22's and f20's can benefit from 2.5".

I don't work much with b-series motors so I can't really tell you if 2.5" would be any good. 2.25" is always a safe bet though.

[jcrx]

Signal...that car in you sig is disgusting hahaha.


2.5 is plenty for a N/A B series.

[SiGNAL748]

What are you talking about? Thats 100% JDM!! (And the sad part is that it really is )