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DBAX4M40i · 01-28-2019, 10:19 AM

Can you hear it from the outside as well, or just the inside?

Sounds like the noise an amplifier would make on an aftermarket radio, honestly. Especially if the pitch seems to follow the revs.

01-28-2019, 10:19 AM	#2
DBAX4M40i New Member 3 Rep 17 Posts Drives: X4 M40i Join Date: Aug 2018 Location: Orlando, FL, USA iTrader: (0)	Can you hear it from the outside as well, or just the inside? Sounds like the noise an amplifier would make on an aftermarket radio, honestly. Especially if the pitch seems to follow the revs.
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