I can't believe you geniuses are smart enough to be good mechanics, but can't understand the concept of hydroxy boosting.
It only takes 10-20 amps of power to run an HHO booster. Most alternators easily have that much spare energy available assuming the car is not running all the electronics simultaneously. The small amount of HHO (approximately 1 liter per minute) being produced by the booster enhances the air fuel mixture increasing the efficiency of the combustion, thus increasing both horespower and fuel economy.
Yes, you are correct about the loss of energy when transfering from one form to another, but what you fail to recognize is that there is a tremendous amount of petroleum fuel not being burned during every single power stroke of the engine. Said another way, the HHO booster is leveraging the fact that there is a great deal of potential energy being wasted in the form of unburned fuel during every power stroke. THIS FACT MUST BE UNDERSTOOD, AS
THIS IS WHERE THE GAINS COME FROM!!!
If there were already a 100% fuel burn, the HHO would not offer nearly as much benefit, if any at all. However, the fact is that, depending on the vehicle, anywhere from 25-40% of the fuel goes unburned during each power stroke. The HHO is a catalyst to increase the combustion and more completely burn the fuel.
Look, I'm not selling anything, and I'm not promoting anyone who is. This hydroxy booster thing truly works. It's not plug and play, and if it's not done with caution, bad things can definitely happen, because HHO gas is extremely powerful stuff. One of the reasons there are so many horror stories out there is because lots of guys who know nothing about cars are excited about the possibilities this technology offers and they get in over their head trying to do things with their cars that they don't fully understand. That doesn't prove the technology is a failure. It merely proves that there are stupid people. The same stupid people who make mistakes doing ordinary things to their cars.
Rather than mocking and denying the facts, wouldn't it be a refreshing change if some guys like you with serious car knowledge would get on board and help people working with HHO boosting to tune their cars to operate successfully. If that happened, there would probably be less horror stories and more success stories, and then we could all buy less oil from frickin Saudi Arabia!!
Here is a link to an HHO forum with a results section. If you can muster up an open mind for 10 minutes, go check it out for yourself. Not everyone is getting great results (stupid or inexperienced), but many many are getting 20-30% fuel economy gains:
http://www.fuel-saver.org/Forum-Results