Well, I did the same test for 5.55, 6.2, 6.3 and 6.4. I dialed in my VE table so trims were spot on with the 5.55 settings. I had identical results again across the board for all injector timing values. Average fuel trims varies about a couple tenths of a percent and IBPW by .005 or so on average. Perhaps my cam is just mild enough and does not have have enough overlap to see benefit in this.