[Richard L]

Sorry for the late reply, busy time of the year for me.

Ethanol + Water injection:

1) Rate of evaporation reduction will depend on the boiling point of the injectant and inlet air temperature. Also the response time of the sensor. Thermocouple is the fastest and most accurate than the thermister based sensor used in car. Thermister is slow and often being heat soaking by conduction to the surrounding masses.

2) This is the most ideal location, please do it. Ample time to mix and evaporate.

3) The hesitation may be be link with the lean AFR. Reducing the boost will also reduce the water/ethanol injection. It is just a guess. Try moving the PI-R trimmer to the left to increase flow by boost.

4) the gain knob is for rescaling the input signals to attain full scale response of the system.

5) You need to make some experiment on this one. It all largely depend if you want to add more water/ethanol in the mid range.

6) It appears you have a longer than necessary distance between the FAV and nozzle. The initial ramp is most likely to be due to the action of expelling the air inside the hose.