Suggestions on water/alcohol ratio

[fastrick25]

Ok i just bought a kit of ebay that uses a 100psi pump, it comes with an m4 spray nozzle which sprays 4pgh.I plan on using the kit mostly for its cooling and knock reduction abilities not for simulating race gas.I was thinking of running 70%water/30%alcohol to get the desired results.The vehichle is a turbo eagle talon with a b16g which is making close to 300hp at the crank.If anyone has any suggestions please let me know.Thanks