Thread: custom exhaust?
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      05-02-2014, 08:52 AM   #7
Evolve Automotive
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Drives: E46 M3 . E90 M3
Join Date: Jan 2013
Location: USA

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Like above, removing primary cats will provide you with the most power gains. If you need a tune to remove your CEL light and provide you with some power let us know
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