AS noted, do not push the tune much unless you have an exhaust temperature gauge. Without the temperature, you can literally run the engine until melt-down,
Also upgrade the transmission oil cooler and monitor transmission temperature. On my 2002 7.3L, I had gauges for boost, transmission and exhaust temperature. I had an up graded transmission cooler, a heavier duty torque converter and used synthetic transmission fluid. The truck was dependable and capable until we got a larger trailer.
Ken
Amateur Radio Operator.
2023 Cougar 22MLS, toted with a 2022, F150, 3.5L EcoBoost, Crewcab, Max Tow, FORMER Full Time RVer. Travel with a standard schnauzer and a Timneh African Gray parrot