Water doesn't compress so it would have to load the turbo if put in front. On the other hand after the turbo the boost pressure might be more than the water pressure. Most mechanical pumps are made to do volume and not a lot of pressure. Also I don't know how well they would handle water. Then there is the freezing thing and what you have to put in the water to deal with that and how the pump would handle that. Just some thoughts. Water injection is a good tool for draw through turbo set up but I really haven't studied it much. On my Megasquirt set up I hope to be able to program the injectors to avoid detonation. Beater
