I went with the kev's mod and vcycle. Seeing that, by what I've gathered. Below 5k rpm is closed loop. From what I understand there isn't anything anyone can do with the fuel mapping below that point. I could be wrong on that, but that's the way I understand it. The snatchy throttle, from what I gathered below 5k comes mainly from the on/off state of the injectors, and the lean condition from the factory. Kev's mod fools the ecu making the bike run richer (13.7 to 1 rather than 14.7 to 1) which helps in both cooling and smoothing out that lower rpm area. Leaving the injectors on during closed throttle eliminates that split second gap of open closed, which causes a harsh throttle surge. That being said Upper rpm doesn't really make a whole lot of difference to me. Because I spend most of my time around town below 7k. With the occasional hard pull. For the money I got exactly what I wanted. What I spent was about $300.00. With Ivan's pricing I would spend more than $400.00 to get the same result. With that I'm pretty sure that both Ivan, and Vcycle are faced with the same options below 5K. So I don't think they do anything different than one another. For the decel popping, rather than eliminate the ais strictly through a ecu reflash I got the graves block off plates, and eliminated the ais module all together. If someone has conflicting info please say something because in the end. I just like knowing what's what.