OS 46 LA/ OS 46 FX- What's the difference?
Well, the 65 LA is different than the 46LA, so it's tough to compare what power they make versus their FX equivalents. I just started running a 65LA and I am very happy with it. A 61FX fully broken in might make more power but for the same price as the 46FX, the 65LA is a great engine.