Soon as i get my *** together i'll build one for my car. Also planning on fogging a little stink(propane) in there too. I can't bring my self to pay 400 or 500 + for a water meth kit that i know i could build.
done properly on a Direct Injection Diesel, propane can help burn all the fuel better.that being said, it is generally considered a no no to do on an IDI motor.(something about breaking the prechambers)
the new propane/water injection is actually HHO injection read up on Stan Meyer for more info. but beware of all those goons out there selling their 'cheap' jars... you need a controller capable of delivering thousands of volts at mere milliamps at the waters resonance level (which is around 20khz). the theory of operation is pretty cool. just like using frequency to break glass, why not use frequency to break apart hydrogen and oxygen? and it takes about 1/3 the energy of electrolysis! at least 50% gain in fuel economy with the right setup... i'm gonna try and build one some of the components required are a 555 timer, a mosfet or two (i was thinking two mosfets alternating to reduce the stress on just one.. gotta think longevity here, especially when they are only a few bucks each or free if you have some old computer junk lying around ) and some coils to get the right voltage. right now the vancouver gadgeteers are selling the right toroidal transformer core for $700, which is actually reasonable considering the work involved in making them. i might try using 42 gauge wire in bifilar configuration with a larger gauge to try and get 2000+ volts to make it work (about 1/4 the cost...)the performance increase would also be pretty sweet! the amount of mods required for a gasser to run HHO is pretty extensive, including a lot of timing mods and oxygen sensor mods. with a diesel nothing is really required due to the timing specs already. HHO requires a lot of retarded timing. timing advance might actually need to be toned back on some peoples rigs though... happy injecting!