Afternoon all

I have yet another issue with my l322. It appears to go into some sort of limp mode when worked hard up hill.
There’s one hill I go up on a dual carriageway and carry about 75mph going onto the hill. Giving the Range Rover everything it’s got it slows down to about 45 then refuses to Rev past 2500rpm or change car. Then feels very rough after the hill has been dealt with. But will Rev and change gear normally again.
Only fault codes I have is related to boost pressure 1E30 and smooth running and egr deleted
I also decided to do a leak off test as I have the equipment and the lowest reading I got after 2 minutes was 25ml and the worst was 60ml.
Also a comparison of boost pressure, air mass and fuel pressure.

Air mass looks suspicious:
Actual air mass at idle is 696mg/stroke
Target air mass at idle is 424mg/stroke
Target air mass barely changes when stationary and revving however actual air mass increases to 800mg/stroke then at 2000rpm drops back down to 600mg/stroke.

boost pressure matches target and actual.

pre supply fuel pressure is 4.0 bar at idle which drops to 3.5 bar when revved to 3000.
Rail pressure at idle is 317 bar which climbs to 522 bar at 2000rpm and 600 bar at 3000rpm. This matches the rail pressure setting.

current for rail pressure control is 730mA at idle and 930mA at 2000rpm.

rail pressure control valve is at 18% at idle. And 22% at 2000rpm.

boost pressure regulation is 80% at idle and 56% at 2000rpm.
All testing is done with the Range Rover stationary so not under any real load. Out of everything I’m curious about the air mass values.

Thanks in advance.