Yes you will fire the highspeed valve with the injectors. Changing the pulse width changes the flow, use a 1.0mm nozzle or you may have to move up to 2 0.9mm nozzles for high horse power. The high speed valve will not require a resistor. Keep water pressure constant.
You will be running the water injection just like a fuel system.
If you elect to not use a different map for the water then you will change jet size to create the balance between fuel, air and water.
You math is correct on water fuel ratio.
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Brad
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