I'm glad someone brought this up. The Xterra is the perfect candidate for nitrous: you can't fit a bigger engine, no off the shelf supercharger kits, and it is beyond me why anyone would spend $800 trying to squeeze 14 extra horsepower using a different air filter and cat-back exhaust. NOS is great if you don't lean out your engine and burn a hole in a piston.

I've looked at some "wet" and some "dry" systems. Any of you guys who have used nitrous care to explain the differences and benefits of either?