Water ingestion in engine on 2011 Tiffin Phaeton 36QSH

There is a difference between water vapor injection and ingestion of a large slug of water.

Guys who build up their diesels use water vapor injection to increase power and assist in cooling the combustion chamber. Sometimes they will add something like alcohol to the water to increase power. Pullers (farm tractors) will inject gallons of water in a pull to keep things cooler.