Quote:
Originally Posted by Froz3n_M
Legal except California, which has the strictest rules on emissions. Precisely why the OEM cats need to be as restrictive and meet a certain "level". I do agree its restrictive, but imagine BMW selling M3/4's everywhere BUT California, because of emissions (not a good look lol).
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I agree with that but aftermarket companies can still cater to the other 49 states. At least for now California allows cat back systems thankfully! Wait until all the newer cars have monitored GPF's on them though. Things are going to get much worse unfortunately.