Originally Posted by
DAVECS2
Another issue I have found that helps to smooth out low speed is the air flow gain settting and the min throttle voltage and step size. The gain has pressure ratios from 10 to 100 on the y axis. With forced induction that reange no longer is accurate. It needs to be rescaled to 30 -130 pr more depending on boost. Idle is now in the PR range of 40-50 so the idle vlaues need to be moved to those areas. This works in 18-20 vehicles, in 2021 they made a change to the throttle model and I don't think the tables in HP tuners line up quite right. I have not been able to modify any throttle airflow values without very weird results. As for the min voltage the higher you can set this setting before the rpm does not return to the idle rpm the better manners it will have off the line. Also try to minimze the step value of the voltage. You know when you go to small as the small pedal inputs cause surging. This is also affected by the first two values in the airflow tables. If you jave a table that works try leaving those values alone until you absolutely have to change them.