I'll probably get my tit in a wringer on this, but, Juice is like robbing banks, you're going for the big result but the inevitible consequences aren't usually pleasant.
If you want an instant 100-200 Hp on demand, you will pay for it, either before, by building a bullet proof Bullet or by picking up your puzzle at half track.
I suppose Nitrous has it's place, and there's guys who use it with few negative consequences, but if you're tuned right, running 'em lean and then making 'em leaner on top is a sure fire path to an uncontrolled BANG!
Just sayin'