I've found this subject to be interesting, The use of hydrogen generators to help fuel combustion engines. I understand the logic that it takes energy to split h20 into H H O, hence the gain is offset by the energy used to spin the alternator.
The reasoning that the H H O works not as a fuel per se but as an addittive, which makes for more efficient combustion and less tailpipe emmissions, is what I'm curious about. Most of what I have read on the net is nonsense on both sides of the argument.
If I spent enough $$ on fuel to make it worthwile I'd probably drop $500.00 us or so on a unit made by someone like "Magdrive". I'd do it out of curiosity more than anything else. I'd have to see it myself to believe it.
Don't waste your time or $$ on do-it-yourself gimmicks. The only way it could possibly work is if the hydrogen generator was far more efficient than one most of us could construct at home.
The Magdrive site was one of the more interesting ones, and they have some interesting design concepts for a small scale operation.