![Laughing :lol:](./images/smilies/laugh.gif)
The headlight washer pump crossed my mind as it develops more than sufficient pressure and flow for a mister and it would save installing an additional water reservoir and pump.
Another mod that I am considering (which would replace the mister but could utilise the same switching circuitry and pump as long as the reservoir was kept as pure water without screenwash) is water injection into the manifold. If you look at the left hand side (viewed from front of car) of the inlet manifold under the three little hose tails there's a core plug in the casting about 30mm diameter. If I were to make a 'lance' that could fit in in place of this core plug with some very fine (maybe 0.2-0.3mm) holes positioned to spray a mist directly into each of the four tracts leading into the lower manifold and ports under high boost pressures, I think this would give excellent charge cooling meaning I could run pretty high boost on the standard mapping without it knocking itself to pieces. The drawback with implementing this is that it will require a lot more maths than an intercooler mister to be efficient and effective as the quantity of water is a lot more critical when spraying into the intake as opposed to just misting down an intercooler. I'd have to work out what pressure and flow the pump delivers, what the air/fuel ratio is likely to be when it's activated, the net amount of air and fuel likely to be flowing when it's activated, what size the holes need to be to deliver the right quantity of water at the given delivery pressure and flow etc etc etc. It may even need to utilise something like a rising rate pressure regulator to increase delivery as air/fuel flow increases, I do like the concept but it's whether I ever get time to do all the necessary research and calculations and testing to implement it properly! I'll go with the mister for now
![Laughing :lol:](./images/smilies/laugh.gif)