AEM ECUs
This protocol works with all AEM ECUs except the #30-6905 EMS-4 which does not have a serial port. For series 2 EMS systems or for the #30-6905 EMS-4 you can use the AEM CAN interface.
The AEM ECU outputs a 21 byte sequence of data at 19200 baud. From this data, the following channels are extracted.
| ECU Name
| Race Technology message
| Race Technology Default name
| Race Technology VAR number
| Resolution
|
| RPM
| Engine RPM
| RPM
| VAR_0010
| 25 RPM
|
| Engine Load
| Aux 26
| Auxiliary 1
| VAR_2025
| 0.1
|
| Throttle Position
| Aux 1
| Throttle Position
| VAR_2000
| 0.1%
|
| Intake Air Temperature
| Temperature 1
| Temperature 1
| VAR_1000
| 0.1°C
|
| Coolant Temperature
| Temperature 8
| Water Temperature
| VAR_1007
| 0.1°C
|
| Analog 13
| Analogue Input 13
| Analog 13
| VAR_0212
| 0.01 v
|
| Analog 14
| Analogue Input 14
| Analog 14
| VAR_0213
| 0.01 v
|
| Analog 15
| Analogue Input 15
| Analog 15
| VAR_0214
| 0.01 v
|
| Analog 16
| Analogue Input 16
| Analog 16
| VAR_0215
| 0.01 v
|
| Analog 17
| Analogue Input 17
| Analog 17
| VAR_0216
| 0.01 v
|
| Analog 18
| Analogue Input 18
| Analog 18
| VAR_0217
| 0.01 v
|
| Analog 19
| Analogue Input 19
| Analog 19
| VAR_0218
| 0.01 v
|
| Analog 20
| Analogue Input 20
| Analog 20
| VAR_0219
| 0.01 v
|
| Lambda 1
| Misc 1
| Lambda 1
| VAR_4000
| 0.1 Lambda
|
| Lambda 2
| Misc 2
| Lambda 2
| VAR_4001
| 0.1 Lambda
|
| Vehicle Speed
| Misc 4
| Speed From ECU
| VAR_4003
| 0.1 kph
|
| Gear
| Aux 27
| Auxiliary 2
| VAR_2026
| Raw Value
|
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