Can someone please explain how meth works. Is it like NOS, and you have to inject it or can you run it like alcohol. I hear its good. Why?

 

Its just the same as alchohol. The gain on an NA car is VARY marginal..its for forced induction.. ie Turbo/blower

Its injected just before the intake...
It cools the intake charge by upto 30*F
It increases the octane rating of the mixture to help stop detination