Alright boys, im ordering an apexi N1 later on this week, im just wondering about fitment for the catalytic converter, not sure exactly if its 2.25 or 2.5 i know its 60mm. im wondering if i should get a high flo cat, and if i do what the inlet/outlet size should be running a stock header? the cat needs replaced regardless because its broken (dont ask) so if u guys can help me once again that would be off the hizzle!

car : EJ1 (95 coupe Si. Canadian)

 

the stock cat is 2.0" ID. Get a cat with 2.25"ID and it should work. Even if it's not exactly the same size the difference in .25" wouldn't matter. The flanges should hook up.

 

PM KTeller8 he's an H-T Sponsor, he'll help you out with what you need

 

alright, thanks for the info, that should solve my problem. Yea and about having it a bit bigger, people have told me that it should be ok as long as it has a good seal.