BMW M3 G80 G82 - View Single Post - Exhaust sound before break-in

Rono63 · 04-09-2022, 04:02 PM

The only function of the button is to keep the exhaust valves closed. Putting the engine mode into Sport or Sport + opens them.

04-09-2022, 04:02 PM	#3
Rono63 Second Lieutenant 733 Rep 242 Posts Drives: M4 Join Date: Dec 2021 Location: Austin, Texas iTrader: (0)	The only function of the button is to keep the exhaust valves closed. Putting the engine mode into Sport or Sport + opens them.
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