ORIGINAL: Gray Beard
There are even manufactured mufflers now called mousse can mufflers.
Ahh man that takes the fun out of it!!! Got go out and make your own. I've even made after mufflers using the sample shaving cream cans without a loss of power or increased heat on the engine. Made the engine pretty quiet.
This is part of the hobby... Got out and experiment a little and learn from your adventures.