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      02-01-2017, 01:27 PM   #2
Rallim
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Drives: 2009 135i
Join Date: Nov 2016
Location: Washington

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Most of them are catless, and being in Cali I imagine that's going to make you fail emissions instantly. There's catted ones I've seen, but the gains won't be as much, and even then you'd have to make sure its actually 50 state CARB legal or you still run the risk of failing.
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