Thinking of building a hydrogen gas booster for my 06 electraglide (EFI). When the gas is introduced it burns the gasoline more completely thus reducing the wasted gasoline and telling the sensors to increase the fuel flow. Is there a way to overcome this so that I don't burn more gasoline than without the booster? Thanks mdnbiker Another issue is do the cylinders fire on the exhaust stroke? If so then the booster will explode. I know the older style models did but didn't know it the newer EFI's only fired on compression stroke.