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      04-22-2019, 10:33 PM   #55
zeyad.habeeb
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Drives: 435i GC
Join Date: Oct 2018
Location: San Diego

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Quote:
Originally Posted by professor_yo View Post
Sounds beastly! I love it!
Hello,

I just installed it on my 435i, but when I do fast acceleration, i hear whistle on the 5 rpm Is that fine or not? Please advice. Thanks in advance