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      01-26-2013, 07:43 PM   #9
BMWM.D.
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Drives: E90 335i & C6 Grand Sport
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Quote:
Originally Posted by cvc 22349a View Post
Is a visual inspection performed? Considering a mid pipe but don't want to r/r just to pass smog.
Usually it is just an under-hood visual inspection, and OBD2 test (to see if monitors are set) and the actual emissions "sniffer" part of the test. I don't think anyone would notice if you removed the secondary cats.
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