for me on the topic of the turbo i have used the ats and banks both and here are my specs on my 7.3l 5spd with 4.11 gears at 2400rpm single cab longbed. this is what my gauges say.
banks= at 70 unloaded: egt 700 boost 4 70 loaded10,000: egt 950 boost 9 1/2
ats= at 70 unloaded: egt 800 boost 2 1/2 70 loaded 10,000: egt 1000 boost 7