Log:
003 for load, afm, throttle angle (think throttle angle is in ths one anyway, may be ignition angle)
020 for ignition pull
115 for requested and actual boost
230 hpfp pressure requested vs actual
You will find that the installer will have left it at optimal setting during the datalogging and apping session when it was installed, however if you do alter 1 parameter then you still need to datalog all of the others as one affects them all.