Yea, I would definately be interested in seeing that. I bought a Jett Stream muffler for the GS-45 (on a Goldberg Tiger 2) and I plan to run an APC 11x5 on it. That should get me in the sweet spot for the engine.

My tests on the 45 and 51 occured in quite different weather conditions as well so that will have an affect on my results I'm sure. Maybe someone can do some SAE calculations on them to compare apples to apples. But here in Texas, it gets freakin hot in the summer so we need all the help we can get!