Has anyone done any testing with alcohol / water injection into there intake. I've read several clips to say it raises octane, burns fuel cleaner, raises performance and economy. WOW! Before I get too excited, I'd like to hear if anyone has any experience or opinion on this matter. The common mix seems to be 80% alcohol / 20% water. The following systems are pressurized by pumps, but I would think even a simpler system using the vacuum pull would be effective and proportional to demand.
http://home.att.net/~stevemon/AlcoholInjMod.html
http://www.dawesdevices.com/howto.html