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Originally Posted by grc
Hi, is the catted downpipe legal for street use in California? Will it pass smog test?
I have seen that downpipes for other makes/models in your site explicitly mention that are illegal in CA, but I cannot find anything about the M235i.
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Axle back should be fine. Downpipe is definitely a no no.It really depends on the smog shop if they will pass it visually. Also, don't drive like a maniac and cops should leave you alone.