The Lorax wrote:
Video appears to be running negative timing, which will help turn turbo wheel. There's no positive boost, (still relative negative compared to atmosphere).
You can adjust idle timing based on temperature if you desire this effect, along with adjusting the idle airflow and target throttle positions.
The stock system uses negative timing too, at start up to help warm catalytic converters.
That's what i'm thinking but the results dont get very similar, because when I increase idle rpm at low temperature, the timing didnot decrease.