Yes, it does take extra energy to split the molecules and the bi-product of combustion is H20... but the point is not to cool the combustion chamber to increase performance like water injectors...heh. If I were trying to disassemble water then re-assemble it in the engine---to cool it, then yeah, why would I spend the energy to disassemble it in the first place? The H2O in the motor is a bi-product of the combustion, which is what I'm actually after, not the creation of water in the engine. The scenario which you are referring to (power it takes to split the molecules it not gained) is an argument in reference to controlled studies that were performed---not using gasoline in the mix, and not using sophisticated, computer-aided combustion chambers. But wait, I wouldn't recommend going and buying a kit from something like driveyourcaronwater.com either. However, done correctly, it works and there have been a great deal of studies done on the applications to gasoline engines since the 70's. Nothing like 200% fuel economy improvement like snakeoil.com states, but 60% increase has been shown in vehicles that are already extremely fuel efficient to begin with---and professionally built and configured hho generators, not kits. There are some credentialed businesses selling the product to trucking companies. They claim they can turn 6hp into 8+hp and added performance on hills that's thousands of dollars saved for trucking companies. Anyways I'm going to spend $100 or so and do some experiments, if anything it'll be a fun learning experience
Summary: The energy it takes to initially separate the molecules is more than compensated for by the added explosive power of the gasoline, effectiveness of alternators, and the inherent power gains you receive when exploding the mixture inside an actual combustion chamber... You would probably have to add 8 generators before you notice the engine having to work harder... depending on alternator...
