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      08-11-2011, 10:48 AM   #12
ee8
Private First Class
Portugal
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Drives: E92 M3
Join Date: Oct 2009
Location: Portugal

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2008 BMW M3  [3.20]
That difference could come from just replacing a dirty BMC filter for a new clean one...

To the OP...

Was the replaced BMC filter clean when you switched? How many miles on it?