[dannichols1474]

The final step in the calibration procedure is to repeat the key ON, engine OFF check of the Air Fuel Gauge reading during first 5 seconds and during the second 5 seconds. During the O2 sensor heat up cycle the controller outputs a voltage corresponding to an ideal AFR of 13.328 for the first 5 seconds and outputs a voltage corresponding to an ideal AFR of 16.66 for the second 5 seconds.

When I performed the calibration check after inputting 10.192 and 19.992 in the "Calibrate AFR Table..." the Air Fuel Gauge read 13.40 during the first 5 seconds and 16.70 during the second 5 seconds. When I input those values into the Excel calibration worksheet I got calibration set points of 9.895030303 for 0 Volts (Point 1) and 19.992 for 5 Volts (Point 2).

When I performed the calibration check after inputting 9.895030303 and 19.992 in the "Calibrate AFR Table..." the Air Fuel Gauge read 13.20 during the first 5 seconds and 16.60 during the second 5 seconds. When I input those values into the Excel calibration worksheet I got (for a second time) calibration set points of 10.192 for 0 Volts (Point 1) and 19.992 for 5 Volts (Point 2).

When I performed the calibration check after inputting (again) 10.192 and 19.992 in the "Calibrate AFR Table..." the Air Fuel Gauge read 13.40 during the first 5 seconds and 16.70 during the second 5 seconds. I stopped the calibration procedure as I had gotten as close to the ideal AFR values as I was going to get.