I don't really have an issue with the muffler system. It seems to do well and 15w is plenty enough for me. The only issue I had was with the 9.9 error no matter what I did. Since that has been resolved it is fine. It was very frustrating and it kind of makes me feel stupid that I got that mad and it turned out to be a setting. I guess I have either not heard or never paid attention to the P5 area of the orion which controls voltage protection. If that setting is out of range of the battery (batteries) you are using then it will not fire. Seems a little over-complicated to me but whatever, its fixed now.