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      03-23-2012, 09:32 PM   #38
pbonsalb
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Drives: 18 F90 M5, 99 E36 M3 Turbo
Join Date: Feb 2011
Location: New England

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Totally different if you have high flow cats than a catless midpipe. My understanding was that this thread concerned catless midpipes.

Anyone with a catless midpipe and 02 extenders and no CEL?
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