Rich AFR - Toyota Yaris Forums

Neurotic Hapi Snak · 09-30-2013, 02:41 PM

Could it be an anti-knock method? Run rich so it can keep optimum valve and ignition timing?

CTScott · 09-30-2013, 03:32 PM

Quote:

Originally Posted by Neurotic Hapi Snak

Could it be an anti-knock method? Run rich so it can keep optimum valve and ignition timing?

No. For anti-knock the ECM just pulls timing.

Neurotic Hapi Snak · 10-01-2013, 02:06 PM

I figured out what it was, it was Torque. In my settings, I had set fuel type to E10, when I changed the fuel type to non-ethanol, the AFR changed to 14.69. Obviously the ECU doesn't read, or output through the OBDII, the exact AFR, just Lambda. So Torque translates Lambda based on fuel type in the settings, ~14.7 for non-eth, ~14.1 for E10.

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09-30-2013, 02:41 PM	#1
Neurotic Hapi Snak Drives: 2011 Yaris 3dr Join Date: May 2013 Location: MN Posts: 39	Could it be an anti-knock method? Run rich so it can keep optimum valve and ignition timing?

10-01-2013, 02:06 PM	#3
Neurotic Hapi Snak Drives: 2011 Yaris 3dr Join Date: May 2013 Location: MN Posts: 39	I figured out what it was, it was Torque. In my settings, I had set fuel type to E10, when I changed the fuel type to non-ethanol, the AFR changed to 14.69. Obviously the ECU doesn't read, or output through the OBDII, the exact AFR, just Lambda. So Torque translates Lambda based on fuel type in the settings, ~14.7 for non-eth, ~14.1 for E10.