I was also working a bit on my own Car yesterday and was also setting up the ref dc table,
It does not look like it needs the same dc as the normal dc/rpm setup ?
For 1bar boost across the rpm range , pid off, norma dc/rpm
I needed 55% dc up 5500rpm and then Down to 50% to keep 1bar to 8000tpm
But with pid on and the new table i need 50% up to 5000rpm and then Down to 38% , if i keep it at 50% the boost raised to 1.35bar
So it looks like i need to work on the pid settings