Well with all the hype about gas prices, I decided to look up those "super efficient carbs" that supposedly disappeared when the oil companys bought the patent to them. Well I found this, http://www.get113to138mpg.com/ as it looks possible im just not sure because it looks dangerous to me. I guess what it does is turn the fuel to vapor outside of the carb or tbi then sends the vapor to a canister with magnets and a heating element or something which heats the vapor to 750 degrees then sends it to a pressure reducer then to the carb. There are cad drawings on there and diagrams so who knows? Also read the guy's story about the oil company trying to kill him and stole his 72 Pontiac that I guess gets 73 mpg. Sounds crazy but possible with how money and oil is now a days.