Lynn,
I have also flown with internal home-made muffler, spintech and flowmaster. The internal can type was quietest at the expense of some power. The spintech and flowmaster both gave me the same speed, with the flowmaster winning because it "looks" faster. I believe the spintech was just a bit quieter.
Does anyone have some back to back top speed numbers for no muffler, some other brand of muffler, and a Hushpower muffler.
Lynn E. Hanover
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