I'm hoping to be able to get some figures shortly, by conducting a Dyno run, when I get some free time. It should be easy to test, just switch off the water pump, let the heat build up to a normal operating temperature, and give it a run. Then run it with the water pump on.
I have my fuel setting fairly low, but a tweak up from standard ie half turn. At OAT 27'c; on a long hard hill, EGT post turbo reaches no higher than 425'c at 12PSI.

