Cummins Onan generator exhaust modification
Just installed a cummins generator muffler to quiet it down a little bit and I was quite surprised with the result. From 78 dB to 76 dB. (IPhone app). The following video was recorded with my iPhone s...
Forum Discussion
I've been using the Onan resonator for 4 years. You will get even better improvement if you mount the genny brackets onto rubber bushings and also insulate the walls of the compartment with B liner sound deadening material. Alot of the noise you get from an Onan is vibration thru the genny mounting points and the compartment walls.
