Thread: euro header install and now SES
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      04-02-2013, 02:35 PM   #34
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Drives: 2006 M Roadster
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Originally Posted by SCHMOUPE View Post
Just wondering, how would a bad rear O2 sensor decrease performance?
Read this excellent PDF I found on the m5 board. At the very end of the document it goes into the rear O2s.
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File Type: pdf BMW Fuel Trim.pdf (325.7 KB, 72 views)
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