would a turboback exhaust make you fail the emissions test? well i heard that replacing the stock catalytic converter will make you fail it. i live in illinois and they're very strict with emissions here.please let me know asap because i don't know if i should by a tbe or catback exhaust with just a dp.thanks
Depends on what emission tests you run in your area. If it is an OBD2 emissions test with a visual, with some form of EM like the Cobb AP, you'll pass the test part, but not the visual unless you run a catted dp.