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PeakyJ · 02-22-2021, 02:30 PM

Generally if you can only hear the whoosh sound with the windows down it’s normal. If it’s that loud you can hear it with the windows closed I would say it’s not normal and their could be a boost leak.

02-22-2021, 02:30 PM	#8
PeakyJ Enthusiast 47 Rep 98 Posts Drives: BMW F30 330d Join Date: Feb 2021 Location: UK iTrader: (0)	Generally if you can only hear the whoosh sound with the windows down it’s normal. If it’s that loud you can hear it with the windows closed I would say it’s not normal and their could be a boost leak.
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