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      06-26-2018, 11:51 AM   #1
aann
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Drives: f13 M6 2016
Join Date: Jul 2013
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Weird whistle sound

https://youtu.be/S5f9wjep00k
Hi ,
Recently i hear weird whistle sound when i let of the gas paddle .
What can that be ?
I install k&n drop air filter last week


Last edited by aann; 06-26-2018 at 12:16 PM..
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