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      01-26-2013, 09:28 PM   #15
Sunny D
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Drives: 2011 E90 M3
Join Date: Sep 2012
Location: ATL

iTrader: (2)

Originally Posted by ctuna View Post
My ears aren't fresh and have been kind of abused but you must have dog ears.

Why don't you make a recording with the hood open in the Engine area.
It is very high in frequency, but you also need to play it back on something that can reproduce it. It is clear as day playing back on my iPhone, but I cannot hear it on my macbook.
2011 AW E90 M3 ZCP