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      09-23-2012, 11:49 AM   #15
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Drives: e92 335i 6MT
Join Date: May 2011
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OP, it depends on your type of you do alot of stop and go and little highway?
The o2 monitors may not have a chance to complete depending on how you're driving the car. That's the only thing that makes sense.

You can hook up a BT Tool to see if you have codes / monitors pending.
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