A/F values never match A/F CMD values...

[Conquistadore]

Hello,

When I look at any of the datalogs of mine, I see that the A/F values never match the A/F CMD values. In other words the A/F is always 14.7:1.

I tried:
1. Adding more fuel to columns 7-10.
2. Changing the Lambda Overlay Settings.

I also tried to add more fuel according to the Fuel Adjustment recommendations. For instance:

I started the dataloging then, at the third gear, I went from 2000 RPM to 8200 RPM, drived back normal and stopped dataloging, added 8% more fuel to columns 7 and 8 according to the Fuel Adjustment recommendations. Uploaded the new calibration and had another test drive. When I checked the Fuel Adjustment recommendations it was still telling me to add 8% more fuel.

Please advice.

Thanks and Regards.

[Spunkster]

The PRA ecu does not have a wideband and you cannot tune using the readings from the o2 sensor.