on the H&S/MCC program for shift on the fly its strictly the injector duration, they built the timing and turbo maps to be able to work with all the durations. its interesting to compair the stock values in MCC to whats actully stock values from what would be actual values from ford.
thats what is different from MCC VS EFI live, in the sence you can have different tunes with completely different timing and turbo function... ie a tow tune with a built in exhaust brake on just that tune and the proper timing to go with it.... not doable on the MCC program.