Error report: 2025-05-20 00:53:14
Status: Progress

Report generated: VemsTune (Help menu/Error reporting by one-click)
IAC control PID settings.
Setting of Kd = 0 is NOT disabling the D part of the PID.
There are still small osciallations coming from the IAC Calc DE on the IAC Duty Cycle.
In the attached log i played a bit with the PID to show that it is not possible to disbale this behaviour.
I want only the integral part to be active P;I;D=0;2;0
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Comments 
MacB 2025-06-11 02:19:40
I do understand that the single IAC calc values have no direct effect on engine control and only show the internal calculation in first place.

But i do see a slight oscillation on the IAC duty cycle (which is showing the output variable, right ?) in the log.
So there must be a root cause for this in the IAC control.

By looking into the calculation variables i imho found the root cause of that oscillation in the D part (analyzing IAC Calc DE) of the IAC PID control which i tuned to 0 in the settings but it still is affecting the IAC PID control ! By looking into the log view you can see that there is a direct correlation of osciallation "IAC Calc DE" vs. "IAC Duty cycle" (output)
admin 2025-06-05 02:28:44
The IAC calc (in VemsTune "Calc model") does NOT effect the ECU or engine control in any way. It is just inside VemsTune and it is for information purposes only, and the IAC calc (in VemsTune "Calc model") does NOT effect the ECU or engine control in any way. Thanks for the report.
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