BMW 5-Series Forum (G30) - View Single Post

Kandymany · 12-03-2021, 02:43 PM

Resonator was cut open and the valve side had been replace with an open pipe.
Valve closed = normal, valve open = loud.
I measured 92dB at 3750rpm 50cm/20 inch away.
Coldstart is about 98dB.

12-03-2021, 02:43 PM	#7
Kandymany New Member 8 Rep 14 Posts Drives: Bmw 540i Join Date: Jun 2021 Location: Regensburg iTrader: (0)	Resonator was cut open and the valve side had been replace with an open pipe. Valve closed = normal, valve open = loud. I measured 92dB at 3750rpm 50cm/20 inch away. Coldstart is about 98dB.
	Appreciate 0 Quote