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      04-29-2012, 07:58 AM   #7
TEAShea
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Drives: 2012 328i
Join Date: Oct 2006
Location: Nebraska

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The engine has balance shafts and should be very smooth at idle. Mine is. However, there is considerable sound from the direct injection system. It makes it sound like a clackity-clack - like a diesel. All direct injection engines have this sound to some extent.