Ok this one is for all you preformance guys , a few guys at the field were tallking and phase porting there 2 strokes to get more out of them . How is this done and what are the benifits? I race pylon and the same plane weighing the same as mine and the same prop the same engine is pulling right past me on the straigts like I'm running a .25 and they have a .40 > BTW My .40 is a hot .40 fx and it's stock theres is not .Please some kind of info will help . DS