this saw has been woods ported and has about 3 -5 tanks thru it. I ported it as a demo saw and it hasn't been in the woods ,just to the wood pile for show and tell. this saw was at t5he ky gtg and folks couldn't tell a real difference in it ,without a stop watch, and the 550xp that I have ported. they are great saws this one is priced to sell at $700 shipped with a 16'' bar and chain..