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      10-27-2013, 08:22 AM   #7
MJM
BMW CCA Boston Chapter - Member
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Drives: 2011 E90 M3, ZCP
Join Date: Apr 2007
Location: Massachusetts

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I have the Akra slip-on with the Challenge Engineering "Street" X-pipe and have passed MA State inspection 3 times and at the dealer all three times. There should be no problem for you as primary and secondary Cats are still in place.
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