as stated above on the technical side, but here is a another way to understand it. Take an Alcohol pad, or rubbing alcohol put it on your back of your hand and blow on it. You will feel how the air is cooled dramatically. When meth burns it burns cold. that's why people light the alcohol, and it doesn't burn them right away. So what you get is the water/meth is sprayed in not to the point it will flood or foul your car. As soon as it is spayed in, it automatically cools the incoming air (this is a good thing helps alot with heat soak) now the air is denser(sp) with meth/water, denser= more compression. once the meth/water/fuel lights meth burning cold, lowering or making more consistent cylinder temps. Having the temps inside the engine stay the same or lower helps a lot with heat soak. If you have 100tune on your ecu with pump gas and meth, it is like running 110octane, but understand it doesn’t feel like NOS. what you feel see is you can have multiple pulls and there is not lag, heat soak and more hp. You can use different products, HEET fuel line antifreeze(little yellow bottle) is pure meth. You use it 1:1 ration. Majority of windshield wiper fluid that is -20 or more is meth. Look at the ingredients to be sure. Don’t sweat the dye. Oil, gas, has dye in it and it burns fine in the motor. The issue becomes a problem when you run a a higher mix 60/40 meth/water. This can lead to washing the oil off the cylinder heads. Not good. But just like driving your car you must put correct gas, fluids in your ride for it to last. Correct mix no issues. Everyone gets a bit scared putting something new or unsure of in the vehicle. Google the use of it has been around for a long time. It has been covered the last couple of issues in EC, ET too. Remember turbo's have recently become the wave for performance, it was originally set for fuel efficiency. My buddy Inferno schooled me on it, and I have been running it. Since the first time, it was like the first chip. I run a VAST meth/kit. It is basically a devils own rebadged. I like the controller the best out of all companies. my opinion. Devils own has a great DIY install guide, hell I am dumb and put it in about 1hr. 20 minutes just to find a way through the fire wall. Well I hope the bad spelling and ramblings doesn’t stir the grammar police. And helps a bit. I didn’t understand it either when I first heard about it, GL
