How do the boost controllers work?
Is it like a stepper motor on the wastegate or piping controlled by a 4-20mA or 0-10v signal?
We use similar in industry if it is,just calibrate it to how far to open I.e fully closed,4mA fully open 20mA or whatever really.
Also totally agree with the above re:tuning,get it driving 100% first then add power safely.