I honestly think if you were an engine modifier, this would be a VERY handy tool. Showing your results of different types of porting and timing, etc...But to own one personally, I couldn't see the point. It's just like full size dyno's like you mentioned, who uses those? Engine builders and PRO racers. Us street racers use them to see what out BHP is. Full sized racing which I have done and still dabble in have so many more variables to consider in regards to engine performance. Unless your willing to take your rc engine apart and start dremeling (which would be FUN!!! and expensive) I don't see the use. Tuning our rc engines takes experience, watch the top national and world drivers tune there engines. It's amazing how awesome they are. All without a dyno. Don't get me wrong, I'm all about power to the max, maybe it's just the cost that shy's me a way a bit, at least for personal use. It definately looks like fun to play with though! I would like to see one work in person to get a better opinion of this whole deal. Very SWEET machine nonetheless!