I have an appointment with the State Referee and want to get signed off. I currently have a non-C.A.R.B. exempt high-flow cat installed on my 1994 Integra LS (B18B). I'm guessing the only solution is to buy an O.E.M. cat. from the dealer(?) and have the hi-flow cat cut out and weld the stock one back in? Any advice is appreciated. Thanks!

 

If your cat doesnt look new then you should be OK. For obd2 vehicles it is mando to have an CARB approved cat. Not so much for obd1

 

Carsound cats are legal, and about $250 installed in my area. Just get the right one for your car.