Thread: Ar design DP
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      12-25-2012, 08:06 PM   #1
Warriortogo
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Drives: 2011 Z4 35is 2008 135i
Join Date: Apr 2012
Location: CA HK UK


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Just add the Ar design DP on my 135i with N54. The car are crazy in speed.
But, when I push up the rev. , it got some "zu,zu......." sound from the middle of the car ( around the DP area.) in between 1700-2000rev. After 2000rev, sound is gone.
Is it alright? Did someone get this sound after the DP changed too?
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