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      07-23-2012, 01:12 PM   #271
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Drives: 2006 M Roadster
Join Date: Mar 2011
Location: CA

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That makes sense. If all four connectors are on the headers, then 29F4 code is correct in that you don't have cats installed (at least not for the purposes of monitoring). So you likely got a second tune with the "cat less O2 ready" option. Did you request that option originally?
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