JDG, Not sure how familiar you are with the transmission on the RTV-X as opposed to the Gator but the RTV-X having the HST will require backing off the peddle to increase torque, counter intuitive I know but that is how the HST work. The more you push the peddle the more your going to kill the engine under to much load. As for the Turbo I had looked at them because I hated the MAX speed available but the most I have observed gained through forums without excess smoke is 36MPH, I get about 28-29MPH out of mine. The tech at the dealership came to the house (He lives around the corner) and adjusted the throttle some how to gain me about 3 MPH. I just cant see spending another $2500 on the kit, also the turbo will void the warranty and the tech I know said he did not advise it on those engines. I live in flat lands and it performs well for me, it would pull my house over if I tried, not fast but powerful. I do hate the seats, but I haven't found an aftermarket yet. The trade off for the speed is I don't have to worry about the kids at 60 MPH. Good luck hopefully you can work out something to enjoy it more.