Quote:
Originally Posted by andrin
I've seen on the web ads for a device that somehow uses water and claims to increase mpg significantly. Anyone know about it...
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As another poster mentioned,
HHO (where they use water to make hydrogen gas) is what you are probably thinking about. There is a lot of discussion about it on this forum, with no definite conclusions yet.
But the other thing you might also be thinking about is "water injection". The idea with water injection, is that you inject (distilled, or at least highly filtered) water into the engine cylinders AFTER the normal gas/air mix (turning a traditional 4-cycle engine burn, into a 6-cycle engine burn, with the remaining 2-cycles being the water injection). If done right, this water will vaporize from the remaining heat in the engine, giving you an extra up/down push of the piston for "free", and also having the positive side-effect of cooling the engine for the next cycle.
However, while such a system has been shown to work, the redesign of the engine and ECU (engine computer) to accomplish this is usually more involved than your normal "do it yourself" type would want to tackle. Also, once you do such a "water injection" type mod, you now are forced to keep water (with the minerals removed, i.e. normal "tap water" is NOT safe for this) in the car at all times, as you are now "burning" both the gas and the water you are injecting into the engine. So while "water injection" is worth a look (I'd probably do it myself, if the car mods weren't so involved, as I still think distilled water is cheap compared with the price of gas), it's not without its costs (including the major hassle to modify existing engines and ECUs to handle it).
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