S Sergey P.A. Senior Member Mar 13, 2004 #1 which size would you go on a N/A 2.25 inlet/outlet or 2.5 for ths high flow cat...inlet/outlet http://store5.yimg.com/I/twincamtech_1775_14735104
which size would you go on a N/A 2.25 inlet/outlet or 2.5 for ths high flow cat...inlet/outlet http://store5.yimg.com/I/twincamtech_1775_14735104
J JDMilan Senior Member Mar 13, 2004 #2 depends on yoru collector, personally i have always gone with a testpipe :florida:
GSRCRXsi Super Moderator VIP Mar 13, 2004 #3 i vent with a 2.5" in/out simply cause i have a header with 2.5" collector