RE: Mufflers for gas engines
Perhaps it's because of the very open area I fly from but I haven't noticed the DLEs being that loud? One fellow did have a big twin that was ear shattering one day, I knew he had just changed canisters and thought it was that but the next day it was quiet again, all he did was changed the prop to a different manufacture and it was quiet again. I just don't recall what the loud prop was and what brand he went to the next day.
Post up if Bisson has them for the 20 yet? There mufflers are real mufflers, not just open boxes.