i have infact experimented with hho generators, the system is a very simple idea and with a carburated vehicle is in fact a very very cool idea, i sucessfully built and tested an hho generator on my workbench and it worked quite well, i used 304 stainless sheeting and rubber washers to space the plates, theoretically if an efficient alternator was installed on your vehicle and your generator system was working properly all you would have to do is maybe jet down your carb a little to get somewhat better gas mileage, i have reviewed an hho system on my 620 in my head several times while sitting bored in one of my college classes, the system would consist of the generator itself (stainless plates with alternating polarity) and then a gas feed line into a water seperator (to prevent water from entering your intake), then a check valve to prevent an explosion and from there a feed line directly into a vacumm line on the intake manifold.
of course hho has no lubricating properties so running your engine too richly on hho could reduce the life of your engine, in order to get an excess of energy from the reaction, your cell and your charging system would need to be very efficient (remove ac or smog pump) now that i think about it i may try and continue playing with hho and maybe build a small cell and put it in my truck, when i built my bench generator i collected the gas in a graduated cylinder and ignited it with a torch, let me say the shit is explosive so if you do try experimenting with it be very very cautious, i was lighting bubbles about the size of a small gumball and getting a crack as loud as a firecracker and my ears were ringing, so please be carefull
im sure this thread will get much criticism but the only real way to see if using hho as a petroleum accelerant works is to build and test a cell, so some of you guys with money and time get your asses to work!!!!!!