There will always be some water that gets on the piping wall, what you need to determine is if this will be an issue. If the air velocity is high and hot and dry, then it should still evaporate off. If it's a cold ambient temp and very humid, then it will have a harder time evaporating. Adding some methanol would help.

You can stick it in the pipe wall this far away from the turbo. The jet size would be by HP and engine size, but I would start with a .3mm or .4mm and see how it goes.