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ECUDecodeLicense / AEMECUs

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 0.1C
Coolant Temperature Temperature 8 Water Temperature VAR_1007 0.1C
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
Page last modified on October 01, 2014, at 08:41 AM