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      06-05-2012, 09:36 PM   #6
Em/1
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Drives: 2011 1M VO
Join Date: Dec 2011
Location: Chicago

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I am interested in this problem too, and have thought that most of the restriction is in the DP and then MP, not so much aft of the mid pipe. So figured most effective for power and some reasonable noise would be to keep stock "muffler" and get rid of both cats, tho assumes a tune to take care of CEL and to access the increased potential power. Anyone tried this approach?
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