Another thing to consider is that not all dynos have the same rpm pickup methods and some can be quite off if not calibrated correctly. Are you looking at converting the current rpm charts to mph? I guess I am not understanding the question.anyone else got something on this? i was actually hoping to have a little bit of a discussion. of course, anyone can go ahead and post any dyno chart they want to this thread, for archive-esk sake or whatever. i would like to incorporate mph-derived dynos somehow, but some kind of understanding/agreement/consensus should happen first.