Originally Posted by smart_mick
Even my mechanic doesn’t know! I recently failed my first required California smog check, and it had something to do with a CC, or the lack of one??
Several 450 exhausts have the cat built Inside the muffler to save space.
For states that require a 'visual' before any equipment is put on the tailpipe, you'll have to get one that is VISUAL as well, like:
I ended up finding a Brabus center exit rear valance and getting an exhaust that has it built inside because in CO, they will test it and if it passes, they over ride the visual fail.