That's not the same bike as ours.... So basically they haven't tested on the Z650, nor does that show torque or fuel mapping. All I see is a .75hp gain, but at what expense? I'd really like to see a full spec dyno sheet to show where the fuel mixture goes. It would be great to find an alternative manufacturer that gives performance without having to spend a fortune. The Rapid Bike will run you in the neighborhood of $400, maybe less. That's for the EVO, and you DO NOT need a custom dyno. It will tune itself over time, just plug it in, load the included Z650 map, and let it learn. Any future mods, and it will recalibrate. If it senses an issue, it will default to the stock map. And yes, you can also load multiple maps, and with the click of a button, handle bar mounted if you wish, you can go from performance mode to fuel economy mode. You really can't beat it for the price. I went through all the stages of dyno'ing to get information out there for people wanting to mod their bike. No one seems to do the leg work and get actual info and do testing between mods, and I wanted to be different. Most just bolt crap on and hope it goes well. I like information and seeing what I have paid for, and also knowing that the claims that are put on a product are what you actually get.
In the next day or so, I'm going to gear the bike down with the Vortex sprocket and 520 chain set that I have sitting next to me. After that, I will do another dyno to see if any more power is squeezed out from the rotational weight reduction and also if the Rapid Bike has done any fine tuning since adding it. I know the acceleration will increase a bit, and the torque curve will change, but a dyno will not show that by the way it calculates. The best way is to do lap times, but I don't have accurate equipment for that. For simple pulls on the dyno to see results, it's cheap. A tune session can run you a few hundred depending on what needs done. Call around to a few shops and see what they offer. A simple dyno is anywhere from $20-$40. All depends on their equipment.