<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Whiteintegra &raquo;</TD></TR><TR><TD CLASS="quote">2.5 should be enough for 300whip. Plus im trying to reatain my A/C.

Why would you need/want a 4in DP? im 100% sure your car is not flowing enought exahust for you to open up your dp from 3in to 4in. Silly billy! </TD></TR></TABLE>

haha. nope my hatch isnt. JUST YET! my buddy zol (reaction360) has a 4in vband on his civic and that **** sounds so burly. id go with 3in d/p just for the reason that it is more free flowing. my brother gained 22whp on his 2.5in to 3in d/p.

edit: page 2 ownage

 

oh, i forgot to say, that i would be running a 2.5 in dp with E cut. so 300 shoulnt be that difficult to obtain. At least not with a boost controller.