Okay, for those that are seeing the "dip" in the rail pressure in that middle RPM range as you roll into the throttle, here is what looks like is happening.
This IS NOT a tune from SSR, this is the OEM RP map and you can see that nasty dip in the middle RPM range (1200 - 2200)...right where you'd be if you were cruising and rolled into the throttle.
I'm not sure how Marco addressed this, and NO I'm not going to show his maps (i.e. his intellectual property). But, if that dip wasn't addressed, that's part of the dip in RP issue.....
Here's a better angle on that dip....you can see it right beyond 1200 RPM's. Looks like it hits between 1200 - 1600.