The owner of the saw (who ported it as well) said that it was ok for a couple of cuts.After 5-6 cuts the bar was getting a little dry.He was just torture testing the saw,not that he was going to run a 32" on a 50cc saw all day.Just to show the power of the ported 490 and that these Echo engines (including the 60cc siblings) may luck the crazy rpms but have a lot of torque.All these Echos run Mikuni oil pumps,considering my KTM supermoto,these pumps must be good.