I can't answer question about data on T6 as I don't know and I am trying to stick to facts here. What I do know, is that when my engine was dynoed at DTW, the max temp reached was under 900 degrees.
The WI was the tuner's suggestion and as can be seen, not sure that actually helps in any way?
When the car was be rolling roaded with this tuner, EGT's were not being measured at all.
I have read somewhere, this is apparently one of the main purposes of using a RR?