Does the AEM EMS utilize the stock 02 sensors???
Evolving Member
Joined: Feb 2007
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I could never think of a way to get the AEM to cycle around 14.7 like the stock ECU does. I don't think it has the required logic. I wonder though what would happen if you entered the calibration curve of the narrow band sensor, and setup O2 feedback with a pretty tight control limit (once the map is close to 14.7, which would require a wideband). It might simulate the stock ECU's behavior to some degree. Either way, it's not worth it, since you need a wideband to do any meaningful (and safe) WOT tuning.
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Evolved Member
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The AEM NEVER uses the STOCK sensors or even any aftermarket sensors. IT NEEDS to be be calibrated to use or read anything inputted to it. Doesn't matter open or closed loop.
The EMS will be in OPEN loop ALL the time, unless a wideband is specifically designated to read and give feedback to the ems. Then you can program closed loop status.
The EMS will be in OPEN loop ALL the time, unless a wideband is specifically designated to read and give feedback to the ems. Then you can program closed loop status.
Evolving Member
Joined: Feb 2007
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The innovate xd16 is amazing. It can be wired into the front O2 as a narrowband simulation, So if you ever go back to stock ecu for emmisions, you won't need to change O2 sensors. The display can actually be mounted almost anywhere.
Evolving Member
Joined: Dec 2005
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I don't think there are any widebands available that don't do that. I've never seen one that didn't.
AEM does not need an o2 sensor to function. Most people are referring to o2 feedback which uses a WB signal to help reach a target AF (easier said than done). I can go into more detail if you want.
