sandy
the duty is the ratio of the solenoid being opened and closed
so a higher value, means the solenoid is closed more, which means it holds more boost
the lower the number, the less you should have, well as least inline with the target boost
so if you set say 1.0kgcm2 and 50 duty
and it ramps to 1.2kgcm2 instantly your duty is too high, ie: it's closed too much, and the actuator doesnt progressively open enough, so it opens finally, and its too late, its way over
so if you set say 1.0kgcm2 and 30 duty
and it climbs slowly but only gets to 0.80kgcm2 your duty is too low, ie; its open too much, and the actuator opens early and just lets all the pressure out