For some reason, i can't endure the sound level of my Supercub anymore. Around 94 to 98 Db. !80 hp with aluminium prop. We tried different kind of mufflers with no success. Even the long german one that removes all the sound for the bystanders on the ground but seems to keep the exact same level in the cabin.

Does anybody here have some observation on the sound level inside the cabin of a Xcub for the pilot in the front seat ?

Louis