I noticed this too Dick with my 70cc cans on my 100. The boost is smoother and it doesn't have that 'ramp' in the midrange like some of the setups I have seen. It has real smooth transition, and the best part is it is very quiet. I get many comments on how how quiet my plane is. I do run a 3 blade also...the new Mejzlik 25-12, and this prop is outstanding. In combination with the pipes, the setup is whisper quiet, and thrust has not proven to be an issue at all. I can easily do two vertical upline snaps, and come out cleanly, even in 90 F weather. On this gentleman's 50 though I don't think he'll require a 3 blade, but the pipe will really help performance and quiet the plane down.