Below is a list of AFR values that should be entered into the 02 Sensor #1(#2) Cal Table
if inputting the analog signal to an AEM EMS. These calibration table(s) are found in the
AEMPro software: Setup | Sensors | Oxygen Sensor | Oxygen Sensor #1(#2)
When connecting to AEM’s EMS, make sure to verify that the O2 #1 Gain option is set
so the voltage from the O2 #1 Volts parameter matches the voltage input at the EMS
from the O2 sensor. An easy way to do this is to disconnect the UEGO sensor from the
UEGO gauge. When in this state, the UEGO gauge will output 2.35 volts. You can then
adjust the O2 #1 Gain until the O2 #1 Volts display in AEMPro reads 2.35 volts.
02 Volts Gasoline AFR Methanol AFR Propane AFR Ethanol AFR
CNG AFR
0.00 10.00
4.42
10.72 6.14 9.90
0.16 10.32
4.56
11.06 6.34 10.21
0.31 10.62
4.69
11.38 6.52 10.51
0.47 10.94
4.83
11.72 6.72 10.83
0.62 11.24
4.96
12.05 6.91 11.12
0.78 11.56
5.11
12.39 7.10 11.44
0.94 11.88
5.25
12.73 7.30 11.76
1.09 12.18
5.38
13.05 7.48 12.06
1.25 12.50
5.52
13.40 7.68 12.37
1.40 12.80
5.65
13.72 7.86 12.67
1.56 13.12
5.79
14.06 8.06 12.99
1.72 13.44
5.94
14.40 8.26 13.30
1.87 13.74
6.07
14.72 8.44 13.60
2.03 14.06
6.21
15.07 8.64 13.92
2.18 14.36
6.34
15.39 8.82 14.21
2.34 14.68
6.48
15.73 9.02 14.53
2.50 15.00
6.62
16.08 9.22 14.85
2.65 15.30
6.76
16.40 9.40 15.14
2.81 15.62
6.90
16.74 9.60 15.46
2.96 15.92
7.03
17.06 9.78 15.76
3.12 16.24
7.17
17.40 9.98 16.07
3.27
16.54 7.30 17.73 10.16 16.37
3.43
16.86 7.45 18.07 10.36 16.69
3.59
17.18 7.59 18.41 10.55 17.00
3.74
17.48 7.72 18.73 10.74 17.30
3.90
17.80 7.86 19.08 10.94 17.62
4.05
18.10 7.99 19.40 11.12 17.91
4.21
18.42 8.13 19.74 11.32 18.23
4.37
18.74 8.28 20.08 11.51 18.55
4.52
19.04 8.41 20.40 11.70 18.85
4.68
19.36 8.55 20.75 11.89 19.16
4.83
19.66 8.68 21.07 12.08 19.46
4.99
19.98 8.82 21.41 12.27 19.78
