Cisco 5.0

I have a question guys, ive been looken to buy an off road x-pipe but was thinking about smog. My mustang has 4 cats now the off road ones dont have cats so i was woundering can i have these and pass smog or not????

mjr46

you need at least two cats to pass a treadmill test/tailpipe test

steel1

I think your going to have a real hard time passing without cats. You could install your off-road x and keep your stock h pipe to swap at emissions time or get a high flow catted x pipe and be done.

redpony88

thats what i've always done, i do that with my fox and my sn, just keep the stock one around, the highflow cats will crap out faster than the stock ones by a long shot. so bolt up the o/r piepe and when emmissions time comes around pull out the old cats

natbel08

exactly what i was going to say. do this an you'll never have a problem

stang8689

I bought the BBKhigh flow X and passed with no probs

88BlueGT

like posted above, just keep the stocker around.