Thread: Ar design DP
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      12-25-2012, 08:11 PM   #2
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2009 135i  [3.50]
Quote:
Originally Posted by Warriortogo View Post
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?
Can you post a video? possibly just the sound of the turbo's spooling?
I remember getting my AR catless DP installed on my n54 and the turbos where definitely louder
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