Originally Posted by Gondon

Didn't SGC say it almost burned his car to the ground and didn't do much?

Originally Posted by jmf003

I've thought about it but haven't gotten around to it. Looking forward to hearing how it works for you.

Originally Posted by Grumpy666

The primary purpose of water/methanol injection is to cool the intake charge. It doesn't do this by injecting a cold fluid into the intake manifold - it does it by what some refer to as chemical cooling - more accurately known as latent heat of vaporization. The water and/or methanol is injected into the manifold under high presure (somewhere in the 150 psi range). Being forced through a small orifice under high pressure causes the fluid to vaporize, but in order to do so, it must take on heat (you can't get around the laws of thermodynamics). This heat comes from the surrounding air, thus cooling the intake charge. This is the same way refrigeration works, forcing the refrigerant through an expansion valve under high pressure to vaporize and absorb heat. Having the fluid at a colder temperature prior to injection will not have much impact on additional cooling. It will work fine at ambient temperatures, as it has for the past 60-70 years.

It is highly unlikely that injecting methanol in an engine that is not 'overboosted' will cause it to lose power. The cooling effect will provide a denser charge that will compensate somewhat for the added fuel (which also produces oxygen when it burns). Because the A/F ratio will be affected, the fuel maps should be adjusted accordingly - just the ones that are in effect when the injection in active at WOT. I don't know what you mean by open/closed deck, so I can't comment on that.

Adding methanol to the water will increase the octane rating of your fuel. It does provide cooling when it vapoizes, but only about half that of water. It's the cooling effect and bump in octane that primarily allows you to run more boost and more aggressive timing, not the richening of the fuel mixture.