I just gave it a try: putting the fan on the slowest speed (just one step before it's off) and I don't have the noise anymore. So it's somehow related to ventilation / AC. Do you have any idea what the cause could be?
Thanks.
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2003 2.7 Boxster - Tiptronic - Carrera wheels - OBC - Red calipers - Cat pipes - Modified muffler - Rear speakers - K&N - Litronics
2006 V6 Mustang
2008 ML 350
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