Reading through this thread, i think some people forget that this kit was designed to be a PUMP GAS kit. Built for the majority of alpine riders who want to pull up to the pumps, pull the cord and ride, with a little advantage. I believe it delivers exactly that, for a reasonable cost. For the select group that are into the big pulls and long chutes then this is likely not the set up for you. If you are tuner, then the Vipec is what you want. If you want to just ride, this works great. In the tight trees you can't use that big boost too often IMO. My M8 on 14 lbs would get going so fast in the bush, that it would get me into more trouble than it got me out of. I have ridden the MNTK kit in the trees, and honestly it seemed to be very lineal and smooth, without any burbles or hiccups. Very predictable.
I think that if Polaris was to offer a factory turbo, they would want to offer exactly what this kit delivers, and they will probably use their own ECU to do it.