Did you lean out the AFR? The idea is to use WI to prevent predetination under lean conditions. Ricers use WI with high boost and high compression to increase the power without destroying the motor. Most use a pump system with misting nozzles at WOT though. The latest trick is to use larger injectors and run E85 with a rich fuel map. MPG sucks, but they can make a lot of power.
Why not just use a venturi vaccuum to pull water mist in directly in front of the throttle plate? Meter the amount by the jet size. Just look at the venturi's on a big Holley. So at idle there will be no flow, at WOT max flow, at part throttle part water flow. Makes sense to me. Then of course lean out your AFR.
Really, NO WI or HHO injection system will gain anything unless you can control the AFR. Unless you just want to keep your pistons clean.
Quote:
Originally Posted by ZugyNA
I found when messing with water injection that finding a reliable valve that will shutdown enough to flow a reasonable amount of water is not easy to do....serious needle valves are costly...best bet is a model airplane engine valve. Valves tend to clog...as gas mower engine filter can be used to clean the water.
Found that running 1 qt of water into a 1.5L engine over 50 miles didn't kill it and cleaned the rings well enough to reduce oil usage until the next change. I was using MMOil as a top oil.
After getting the flow down to around 2% (2% of expected fuel use) I saw no increase in mpg and a loss of power when testing time from 25 to 55 mph in 5th gear.
Wanted to try wrapping the exhaust with a copper tube and running it thru that...but never did.
I do now run a pint of water thru the engine and flush the oil with a pint of kerosene each oil change.
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a new policy....I intend to ignore the nescient...a waste of time and energy. 
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