I dont think it's worth the money. I still done get how the extra fuel is getting to the engine to stop the lean condition that would occure when the nitrous is injected. They said nothing about that which seems a little odd to me. IDK maybe I missed it, but from what I have seen they didnt say anything about it, and if you have to adjust the needles manually then yoru engine will be as rich as Bill Gates and wont have anymore power until you reach 100% throttle. And only 8 seconds of power seem's way to short for the money that is spent. A better engine would be better, and I can almost guarantee you that you dont have the best engine out there. So you can always step up to a better engine and maybe do a little porting and stuff, but to each his own and if you want it go ahead and get it. But 8 seconds, nah thats just not for me.