My thoughts on this.
It may clean up your combustion chamber, but otherewise will not allow any improvements to your system without severe tuning or boost. The reason this system appears to work is from an induced vaccum leak that would otherwise cause pinging.
The pinging is stopped by the water/meth and the computer sees no noticable change in O2 readings = more power = more MPGs
I do not believe your TBI has an O2 sensor further amplifying results, but correct me if I am wrong.
As for the appearance of the discussion on HHO/Browns gas/hydrogen generators. Please start a new thread. Those types of discussions will never end due to the flat out foolishness.
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You say that one jar of water lasts a month, say, 1,000 miles? There must not be much water going into the engine. As support of this, there is a tiny inlet tube going thru a metering valve - tiny, tiny air flow is occuring compared to the CFM of air flowing thru your throttle body.
So what is really happening here? A very tiny (seemingly minuscule) amount of water vapor is increasing mileage 3 mpg or more? I wonder how this could be. And, again, if it were this simple, why don't the automakers do it: they have billions of dollars on the line to meet CAFE requirements.
If that tiny volume of water vapor would have that profound an effect, then why would one not experience the same increase in mileage in a humid day, or when driving in the rain? (Maybe you never see high humidity in your area.)
I would really like to understand. Perhaps a Hawthorne effect?
I was thinking the same thing. That small amount of water can't make much, if any difference.
It doesn't. Can't. Water injection *can* produce significant fuel savings gains - in the combustion chamber, water and water vapor flashes to steam, absorbing heat and expanding. But with such a tiny amount of water used, this can't make that kind of difference.
But the vacuum leak *can* lean out the fuel/air mixture, which can increase fuel economy at the risk of pinging, NOx emissions, and several other problems. In this situation, it's minimized, because the leak is most pronounced at idle, when manifold vacuum is highest/manifold pressure is lowest. The more power you try to get from the engine, the less airflow through the leak.
I think that the water is doing little other than acting as a second metering valve. I think that emptying the water out of this system and closing the metering valve to allow the same amount of airflow as with the water would provide substantially the same effects.
BUT! I do applaud the attempt. Unlike most of the other MPG scams, Water injection CAN be used to increase fuel economy, without violating the laws of thermodynamics.
The only water produced from the exhaist is from condensation from the heating of the exhast pipe, once up to temp, there is no more water.
Gasoline is a hydro
carbon. Air is mostly semi-inert nitrogen, and oxygen. Combine it all and burn it, you're left with oxides of nitrogen, carbon, and hydrogen. NOx, CO, CO2, and H2O
(Possibly H2O2 as well, but I'm not sure about that). Combustion *does* produce water, in the form of steam.