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      02-05-2013, 01:11 AM   #7
MCM5
Second Lieutenant
3

 
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Drives: MCB F10 M5
Join Date: Oct 2012
Location: Hong Kong


Posts: 210
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I know what you mean as I have the same issue. just like you, I asked dealer to check at break in service & they said it's normal.

I wonder if it has anything to do with the air boxes having the holes.