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Cab noise level with Walker muffler The idea of an audio recording was mentioned earlier today. I used a Canon digital camera in the movie mode to make a brief recording. It was shot with the passenger window closed and the engine at about 800 rpm. The audio meter is recording the volume...

Another db experiment MO MV man: I did a muffler installation this week using a Walker RV muffler (21470) from Summit racing. I used a Radio Shack sound meter to measure the levels before and after. It may have a different scale or different sensitivity than the instrument you used. I did...