ok would a stock cat be ok on a car if its got a header and exhaust on a obd2 car ??? if not what would be a good choice for a high flow cat that bolts on so there is no welding??? with the high flow cat on will the car throw a cel code? the car is a 5th gen prelude 2001 non sh

 

It it'll be fine - I suggest getting a high flow cat.......it shouldn't throw any codes (as long as its a real cat).

I'm using a stock cat right now - I have a test pipe, just haven't put it on yet. Waiting for my wideband.

 

random technology baby...installed it about 5 months ago and love it...and no it should not throw any codes