what size exhaust

[s14a]

i was think'n on a universal n-1 and 2.25'' custom pipe. my friend said that u need back pressure on a n/a engine. i also saw a hks system with a 2.5'' pipe. or i could also go with the uni muffler and custom 2.5''. so what should i do?

[Dousan_PG]

radhaz..i love this!!

http://pfm101.com/images/funny/ribbon.gif

[Flybert]

Sweet! I love the new picture. we're going to be seeing that a lot i assume. For the newb, it has do with exhaust velocity rather than backpressure if I remember correctly. Mothasucka!!!