N.O.S. lets break it down 2part nitrogen and 1 part oxegen.What
does it do? answer:basicly creats steam and more cylider pressure
wich means more stress on the motor its some what just like a supercharger but in gas form. well enuf of this the amount for a 4cly to use on the road should be around 0-75 shot unless u wanna be retared and use like a 100 and spin ur tires like hell and do nothing(unless u have a progresser) a v-8 is good for about a 50-150 shot if any more increase u have to buy lotz of good parts which is$$$$$$$$ well i think that solves nawwwwzzz lol its not hard to put it in and use it just use ur head and remeber detination lol i think its safe on a 100 shot to decrease timing 5degrees to be safe and work ur way up.

ps/ i got a b-day comming up and i luv nawwwzzzz lol j/k

cougar-