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Hello,

I would like to know how to tune the ETB bias curve.

From what I thing would work would be to set the controller into open-loop mode and set a specific duty cycle and check the TPS value to which it corresponds.

Open loop would be closed loop with p=i=d=0?

Looks like second step would be to set complete bias duty to different runs of same values across complete curve and see how things go? I expect a bit of randomness.

Try complete curve set to -20
Try complete curve set to -10
Try complete curve set to +10
Try complete curve set to +15