just swapped b16 into my civic wagon and need to get new exhaust. so do I need to get high flo cat since the stock does not fit the b series( thinking about 2.25" pipes). please let me know.

Wayne

 

I would to remove the bottle neck from the system. It'll run like a bitch

 

so what kind of cat should I get? should I just get some universal straight flo cat with 2.25" or 2.5" opening?

Thanks

 

after-market cats suck I guess, I went through two Catco in a year before I decided to just use a straight pipe. The when its time for emissions, put the original cat on a run the test. Or go and get a $30.00 dollar OBX hi flo and see how that works.

 

Just go with a free flow cat.