Quote: Originally Posted by
ptperformance 
Nope there all 3" the only that I know of in the industry that is 2.5" is the K&N and one other (no longer avaliable).
Probably the Iceman. Its plastic too.
Well, I'm not sure what HP I'd be throwin
down with what I got but after I install
the O2 housing and DP, I should be 3"
all the way around
except the CAI
