man you guys are immature. i am watching you guys argue over nothing, but at the same time i love watching people throw a fit over nothing as i just sit there and laugh and have to wonder what crawled up their Wh@@HOOZI and died. at any rate, zeppilot, i hear you on the ys, but it was worth every penny. they do eat fuel. put one on a test stand and full throttle it. it's like a friggin afterburner it eats so much fuel, but it gives you that extra little power. see, if you get a ys though, you wont be using all that power so you wont be using all that fuel. at half throttle they dont really use that much fuel becuase the supercharger is not in full kick. i am 14 and get a very limited income too. i spend all my cash on this darn hobby. it's a money pit. but that does not stop me from finding little ways to make cash on the side, like aluminum cans etc. those little things are really important as far as funding goes. get the ys, you wont be worry. just save up for it. it took me forever to come up with that kind of money but it is well worth it. it's the best running engine i have ever opperated. much more responsive than os, more power than saito, fastest throttle response of any engine i have ever opperated including 2 strokes, and is just plain amazing. than again, in the uk, do they use fuel with nitromethane? the ys will not run without it. it wont run so well on anyting less than 20%. to give you an idea as to the quality of this thing, after the first tank it was in tip shape. lost of power, perfect response and flawless transition, everything. i put 3 tanks on it just to see though, and it was at it's best after only one tank. if it only takes one tank of fuel to break it in it must be some kind of amazing machining process. it's just a perfect engine all around. the only thing about it that is less than perfect is that on the outside, in order to cut costs a little bit they did not clean up the casting seams, although is says nothing for the performance itself.