Well today was the day, scored a partial downed oak enough to fill the dually and broke out the new saw. Second pull and she fired. I didn't know what to think as it sounded like a kitten compared to my defunct 041 super. Yes it a great saw going thru the 20" plus oak but really miss that roar of the 041. So should I go for the dual port muffler or leave it stock? As a side note used my 280 for some of the smaller branchs and not to much difference noise wise.