Would this HHO generator design and implementation work?

You do not want to put excess pressure into the combustion chamber. HHO is meant to be drawn on demand through the intake or the vacuum system. I would think that under pressure the system would cause internal damage. As to the previous answer, Those who say something can't be done - should stop bothering those who are doing it! This project utilizes excess amperage generated from the alternator so you are in actually getting 30-50% more mileage for free. you are making the amps anyway. why not put them to use? or is it that you don't like scary new ideas?