Water/methanol injection

It does a good job at it. Especially if you tune the engine to it, but then you have to be careful not to run out of the mixture. It take 91 octane up to like 110 octane, cooler combustion chamber temps means more power plus the higher octane. I ran straight meth on my srt4 with bigger turbo and made it pull harder then normal. On my first time wiring up the used kit I bought accidently wired it backwards where the meth sprayed all the time instead of at a certain boost lol, my bad, I actually had frost on my cold side pipe going into the engine pre throttle body.