i have a 95 dx hatch, exhaust system is stock. i found out that the exhaust is good but the pipes are beat up and i need to replace them. my friends told me might as well weld 2.5 inch pipe on it while im at it. my question is, what is that gonna do? should i do that?
sorry for the dumb question, im a newb at this. thanks in advance

 

BOOOOP BOOOOOP it will be very loud personally 2.5 inch is too big but thats my option

 

If you're leaving the engine stock, 2" will be fine. If you're going to modify the engine (without turocharging/supercharging/nitrous-injection), use 2.25" piping. If you have a heavily modified atmo engine or one that is turobcharged/supercharged/sprayed, then you can consider piping that is 2.5" (or sometimes larger).

 

so my engine is a d15b, i have header, and intake. go with 2.25"?

 

2.25" will be fine. Keep in mind that a header and intake will not change the flow demand of your engine.

 

coo, thanks man. is it even a difference from stock (wat evr size that is) to a 2.25" in performance?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by eglude &raquo;</TD></TR><TR><TD CLASS="quote">coo, thanks man. is it even a difference from stock (wat evr size that is) to a 2.25" in performance?</TD></TR></TABLE>
barely, but yes

 

Not really unless you're heavily modified. Good way to make your neighbors unhappy though.

 

good lookin out