Huy guys
I have the evolution pitts muffler on my engine and I'm just wondering if any one has done any experimenting and knows of any different mufflers that will fit it and may let it turn up a little more.
Any help would be appreciated.
thanks

Also what is the best Dia. & pitch you have came up with for 3-D type flying.

All the mufflers and exhaust systems that are available for the 43cc engine (AKA Evolution 45) will fit the 50

thanks