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      10-27-2011, 11:38 PM   #18
Turbolader
The Fat Stig
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Drives: 2010 135i
Join Date: Dec 2010
Location: 2003 Stg 3+ SRT-4

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^^ Probably the fuel pump priming itself. The new sw update (At least on the n54's) make it very apparent, especially if you are anywhere near the trunk when you press unlock.
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