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      05-01-2012, 06:55 PM   #17
kitw
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Drives: 2015 MW M3/2011 E90 M3
Join Date: Jun 2007
Location: Bay Area, CA

Posts: 2,326
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honestly, put your car back to stock and let the dealership fix it. If you really want to mod if after that, post here about what the dealership fixed to get the codes to go away. Should not be exhaust related.
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