Yeah, there's potential for more but as suspected, injectors are now almost maxed out.

Boost was ~1.2 - 1.3 bar, but I have to check the actual pressure later from my Megasquirt logs.
Torque curve is very nice and flat, well at least after the turbo wakes up. From 4200 to rpm limit (6200) +300 Nm all the time.

It was quite the day actually, most of the time was spent finding out "bugs" in the system, so the actual mapping was only about 10% of the time.
I'll write a better report later and maybe upload the torque curves too.