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      08-31-2012, 12:48 AM   #4
bdaddylo
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Drives: 2011 E90 M3 ZCP
Join Date: Dec 2010
Location: Houston, TX

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I don't believe it's emissions, but rather noise restriction. There are a few threads covering this and how there are two exhaust systems on the 1m, Chinese market and non-Chinese. Very unfortunate, but not irreversible.
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2011 E90 M3 ZCP/AW/Ohlins R&T