That technology has been around since the 60s and with the thousands of tests that have been done to date both in lab, and privately, none have been successful in utilizing hho as a pure unassisted *efficient* fuel. The concept of electrolysis to convert water to hydrogen+oxygen is very unrealistic as far as energy input vs output is concerned. The energy it takes to convert the water to hydrogen through electrolysis is way beyond the energy btu units available in hydrogen gas produced by this method. You want more power generated, add a few generators, which takes more fuel, which requires more power, and its snowballing into a headache. Now hydrogen gas already in its pure state, is a great clean fuel, but there is no infrastructure. But being used through the mentioned process of conversion through electrolysis is a fairytale. BUT if somebody were to find another process by means of converting the h2o to HHO more efficiently, like for instance if frequency were used to lower the energy input required for electrolysis to happen, then that person would be the new Bill Gates of the world, and be rich beyond our dreams.
Now using one of those hho convertors to *boost* fuel economy is a different aspect, and yes those have been proven to add a few mpg, and even in some tests, help give a boost in mileage of around 30%, but those were little commuter cars like geo's. I might try this one out in the future, I have been rolling it around in my head for a while.
Remington