BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i) - View Single Post - Figure this one out, Weird exhaust note change...

Das Ein · 09-07-2011, 06:09 PM

Its the wastegate opening. Mine does it too.

09-07-2011, 06:09 PM	#6
Das Ein Captain 31 Rep 815 Posts Drives: '16 Audi TTS, '17 500 Abarth Join Date: Aug 2008 Location: The Colony, TX iTrader: (4)	Its the wastegate opening. Mine does it too.
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