Only loading the tune and getting Dyno'ed
will tell you how much power you gain. And you have to run before you tune and after to find out what you did. As for the modes the tune should have no affect on how they work just that they will be working with a more powerful engine.
Modes are not something you should be worried about when you plan on Tuning.
2016 GT Vert, SB, AT, 3:55s Weathertech, JLT, Steeda, Colgan, Velossa Tech, Coyote Spacers, Diode Dynamics, Shelby GT350 SW, Curt, Goodridge, aFe, MRT, BMR, Kooks, Mishimoto