Does anyone know if the MDS (multi-displacement system) is "active" during the break-in period? Wondering how this could affect ring break-in if certain cylinders aren't firing.

Also, RPM's seem to be staying relatively higher than I would expect during cruising....between 2,000-2,500 rpm. I have about 400 miles so far. Is this what can be expected after break-in period? Could be driving mpg down right now.

Any thoughts?