I am curious how loading affects the sound measurements. I expect the exhaust system of an unloaded engine running at constant rpm to be quieter than when accelerating.
How do these "quiet" mufflers compare when accelerating? Do some get "relatively" louder than others?
My car has glass-packs that were welded in when I bought it. If I get it running and driving, they will have to go so I'm curious. I would like it to be quiet until I wanted it to be noisy...
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