slowcoupe00
New Member
I'm currently piecing together the exhaust for my 2000 coupe but I'm having trouble finding a obd2 compliant 2.5 inch cat that won't set off the cel. What do you all recommend?
^agreed...not worth the hp gain imoIF you are subject to emissions testing, just keep the stock cat. In all honesty the gain is only like 3whp going from stock to a high flow direct fit. Back in my young days, when we had testing around here, almost everyone I knew had an exhaust to bolt on for testing, and one for the rest of the year.
My old boosted coupe had a $70 cat from a muffler shop on it, we don't do testing here anymore, but I had no check lights from it. That car made just over 200whp. Feed back is closed loop, so as long as the car is closed loop and doesn't trip the light you should be good.