AEM X-Series OBDII Wideband UEGO AFR Sensor Controller Gauge

[dr.mike]

I don't expect the AEM would support the packet-based high-speed logging that EFILive V8 uses. It most likely only supports generic scan mode which V8 does not support/use.

If I had the expected format, I could probably implement it.

[Gelf VXR]

If I had the expected format, I could probably implement it.

That would be great, I'm still holding on to my LC-1's for now unless,...

[Blacky]

If I had the expected format, I could probably implement it.

Now I'm confused, do you have access to work on or modify the AEM controller's firmware? I assume that the AEM only supports generic scanning (SAE-J1979 Mode $01) and does not support packet based scanning (SAE-J2190 Mode $2C and Mode $2A*).

Mode $01 is a generic PID request that simply requests a single PID's value and is what I assume the AEM is using (EFILive V8 does not use this mode)
Mode $2C defines a dynamic data packet that will returns multiple (selected) PIDs' values.
Mode $2A* requests the controller to continuously transmit one or more previously defined dynamic packets of PID data at various asynchronous speeds (slow, medium or fast) without FlashScan constantly requesting data.

I don't believe the AEM supports modes $2C and 2A* which are the only scan modes supported by V8.
Again, assuming the ASM does not already implement modes $2C and $2A*, then to make the AEM work with those modes would require the manufacturer's of the AEM to modify the wide band controllers' firmware to support them.

V7 supports Mode $01 but since V7 was designed for use with VPW based controllers the FlashScan/AutoCal devices have been fitted with a CAN<->VPW bridge (similar to what GM calls their Tech2's CANdi interface). However the CAN<->VPW bridge in FlashScan and AutoCal was only ever designed to translate a single module during data logging.

So even if you could fool FlashScan into thinking the AEM was a normal CAN module (which is highly unlikely to start with) you could only log data from the AEM and not from the ECM and the AEM simultaneously.

I'm happy to be proven wrong and if the AEM does support modes $2C and $2A* then it would probably be something we could add support for relatively painlessly.

*Mode $2A or the manufacturer's specific alternative mode.

Regards
Paul