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      05-14-2013, 03:20 PM   #4
seank
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Drives: e30 m3,e90 wagon,sprinter,z4m
Join Date: Dec 2011
Location: sacramento, ca

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The afr gauge sensor (which is an o2 sensor) is usually in a similar spot to the oxygen sensor in the header. Sometimes they will be installed in the one of pipes in the center section towards the front, rather than drilling into the header. Make sure the wire is long enough for your placement. Also, install pointing down into pipe so it does not accumulate moisture. Hope this helps.
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