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Couple questions here... Does the full turbo back system trip up the computer on the M235i (check engine light, warnings...)? If so how about the cat-back? I love the sound and the HP gains are impressive. This plus a tune would really make this car take off. Also any chance any of this will pass smog in California? Thanks guys
Last edited by benes136; 07-17-2014 at 01:56 AM..
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