[NYVette]

It's a simple third grade science experiment.....using an anode and cathode and passing an electric current through water with an electrolite added. Baking soda or table salt will work as the electrolite with distilled water. Electrolysis (the electric current passing through the solution) will separate the hydrogen and oxygen in the water. The gas produced is fed into the air intake of the car as a supplement to the car's original fuel system. In this guy's diagrams there is no indication of a method to control the amount of gas produced or amount fed into the intake manifold or air inlet. I have my doubts as to how an unregulated amount of flammable gas like hydrogen will run my car. Also...how much hydrogen can something this small produce? Is it worth the effort? Claims of huge MPG increases seem unrealistic. You know what is said about things that seem to good to be true. I'd guess any warrantee from the automaker would be gone.

Do a Google search for topic "Make your own HHO gas"

Hydrogen from fuel cells......that's another story.