Depends on how long at WOT and if hauling a load or any mods. I would say that stock (not pulling) and a sustained floor stopin' would get you above 900 to 1000 in short order. Also depends on where you installed your probe, pre or post turbo. I have mine pre turbo so that I know what the temp is before it goes in. That way if I hit over 1400 at the sensor I know to stop and listen to my turbo melt
I can tell you hauling my trailer up a hill pushing just under 30 psi it will aproach the 1100 degree land and keep climbing if you don't back off. This is why I feel it is truly necessary to have guages when towing!