Ok i'm completely wrong! lol

"This neat little cooler is designed to bolt to the end of our PRO ALLOY front mount intercoler and replace the air scoop which we supply as standard. The purpouse of this unit is to cool the water as it exits the turbo, before it is returned to the water radiator."

Myself and a lot of other people dont run the water cooling on our turbo's to keep water temps down.
Just have to make sure we idle our cars for a minute or two before switching off to prevent heat soak in the turbo and cooking the oil.