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      12-03-2012, 02:33 PM   #3
Jeff@TopGearSolutions
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Drives: C6 Z06, 09 335i, 10 335xi
Join Date: Dec 2008
Location: www.TopGearSolutions.com

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If they do a sniffer test you will not pass with catless downpipes. If they just check OBD II readiness you might be able to get away with it if you use an o2 simulator / downpipe fix.

OR

Just put the stock downpipes back on before testing.
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