Im gonna find an email for the guy that did the FLIR tests and see if he happened to get some internal temp numbers.....

And Im gonna email ZZP to see if they have any dyno numbers for before/after a TB spacer...... i think im leaning to NOT getting it, but just curious.... :?

Unfortunately on my Bonne I accomplished the TB cooling a little differently by blocking off the EGR and using a 160 stat.
Stock the TB was running about 220 F
After removing the EGR it dropped to match the coolant temp.....180 with the 180 stat, then 160 with the 160 stat.
After completely blocking the coolant passages when I installed the Gen V, the TB temp is now about 120 F with the 160 stat.......as long as I don't turn off the engine.
It only really heats up to 160 after heat soaking with the engine turned off after it'* warmed up.

I dropped the after SC temps about 50 F total for about a 5% hp increase due to cooling alone.