What I was getting at is the first log was at WOT the whole log and the 2nd for only a brief period. That being said I would expect a 6.2 with variable cam timing to have a smoother MAP/MAF signal than the older engine. It has a larger throttle body, larger intake ducting, higher flowing intake, etc.
I am wondering if I could even get a 3" elbow like that above my throttle body, much less a 4".