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PID idle tuning

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i have a problem seeing the outcome of the IAV PID tuning.

ive seen the webinar and figured with a web based pid simulator. but its harder to see the results on the fluctuating and sometimes already oscillating idle.

anyone have any good approach for this ?

Make sure you have a steady idle without PID first, It's not there to fix poor settings

As Grant suggests, you want to start by getting your idle stable and on target with closed loop control disabled. This will rule out tune related issues and mechanical issues that could effect the idle quality. This will also give you a solid starting point for your base duty cycle table and the closer this is to being correct, the less work the closed loop system will need to do and the entire idle control system will function better.