High Flow Catalithic Converter...

[Sergey P.A.]

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

 

[JDMilan]

depends on yoru collector, personally i have always gone with a testpipe :florida:

 

[GSRCRXsi]

i vent with a 2.5" in/out simply cause i have a header with 2.5" collector

 

[JDMilan]

66 tru