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      01-09-2013, 01:16 PM   #14
MasterDank
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Drives: 13 F10 M5 Sakhir Orang,Chohiba
Join Date: Apr 2010
Location: K-Town HI

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Mine had open holes.... It does not effect performance negatively as air goes in there not out.... Sucking from a fully sealed box would create a vacuum/restriction.

The gruppe M intake is fully open,and it flows more then stock and spools quicker.


Aloha
Alex
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