106*F intake temps were the highest for the Treadstone core which was the CV1859. That core is a 9" tall vertical flow. There sperco unit was identical in size and peaked the 105*F....
As for Heat soak, it wasn't really a problem, atleast not after 6 pulls and they were all 60mph to 100mph 5th gear pulls with very little cool down time (just the time that it took to cost down from 100 back to 60. We didn't want to use brakes to decrease the cool down time by slowing down faster cause the times would not be consistant (i.e. heavy brakes = short cool down and light brake = longer cool down) and coast down should be very consistant hense why we just did coast down periods.
All tests were done at 10psi on a 92*F ambient temp day.
when the math was worked out, both IC were in the average of 74 to 75% range in that speed range.
Had we had a way of doing less cool down time between pulls, there might have been a differance but I dont think it would have been that much if any at all.
If I do end up keeping my supra and TT'ing the UZ (or any future turbo cars), I will be using Treadstone cores cause in my opinion, they cant be beat for the price.