Okay, so I set my KFLDHBN to max that this can't limit again.
If my Boost runs like i want it, I will set it back to the desired Values, that my Turbos get protected for to much boost.

But only KFLDHBN didn't change anything, I have now increased KFLDIMX, but I think it was to much after 4000RPM.
As you can see in the new log, from 4000RPM desired boost goes much to high and WGDC goes to ~95%, then it goes to WGDC 10% but I can't see a DTC with boost error in VCDS.
I will lower DIMX from 4000rpm a bit and try it again and hope, that my desired boost gets lower at high RPM.
Also in this Log, LDRXN is set to 215 from 2500 until 4000

Yes thats a good Question but the question should be, "why is my requested boost higher with higher DIMX ?"
The funny thing is, in last logs, my requested boost was not so high.
Now with increased DIMX its higher 

So my Problem is, that ChargeLimitTurboProtection didn't change, equal if I put KFLDHBN as high as possible or just slightly higher the LDRXN.
Boost never follows Specified Engine Load, is it possbile that there are other Values which have to be changed that "ldrlts" gets higher ?

also my WGDC gets from ~5800RPM to 95% and after some time Engine becomes emergency operation I lowered boost but the problem is still there.
I think I have to lower boost from 5800 - 7000 a bit more.

I flashed my original Software again and logged it to exclude Hardware Problems, there runs everything fine, so it have to be a Software issue.

Log files are here:
https://1drv.ms/f/s!Av8z8olOxJKJxChgsu817HIperkB

Got the FR in front of me now. Look at page 855