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      08-23-2012, 03:03 PM   #8
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Drives: alpine '08 e92 335xi
Join Date: Feb 2010
Location: Arizona

Posts: 690
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This has been discussed and someone pulled a document stating that it engages at 5 mph and disengages somewhere above 100mph. Someone can search to find it, it couldn't be more than a few months old
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