The ECU does not read more than 2550mbar. You can not rescale for more. 2550mbar is 65535 and it is a 16 bit value. End of story.
If it goes over that the ECU is blind. It will put the same fuel for 2550mbar, 3000 mbar, 4000 mbar etc. It will also run the same timing.
A standalone boost controller will never to any decent degree work with ME7 either.
What we did on here was double the scaling limit to 5120 mbar absolute. This took a long time to do the first time.
It still takes a long time to do for every file, at least a day for me, and I am one of the original authors of the mod.
So please, do not waste time typing up walls of useless text. Instead try to read more.
P.S.
No one on here cares about eurodyne or maestro. You won't get help here with that, stop trying.
Absolutely agree all points. You can overcome the fueling issue to some extent by undscaling the MAF at high PRs but at some point it just makes your job harder as you work around one issue after another trying to force ME7 into doing stuff it just doesn't want to.
Disregard prjs advice at your own peril.