ECMlink Proper settings for AEM UEGO? Narrowband simulation front O2

[chrisman287]

Using p/n 30-4110. I’ve read there are better widebands for this but this is what’s on the car

0-1v can be sent to the ecu but default setting is 0-5v. Does ecmlink allow the 0-5v when you enable narrowband simulation? Or does it still need 0-1v regardless?

Is 15 seconds enough of a startup delay?

Do any of the built in pin assignments work for this p/n? Or is linear wideband the only option? Using linear my wideband reads higher than what’s showing in a log (14.5ish on gauge vs 13.5ish in log for example)

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[curt-s]

Narrowband simulation works off the same voltage you're using for your wideband signal, which should be 5v white wire on that AEM.
You need to make sure you have a functioning wideband sensor set up in link and if that's off, so will your wideband simulation be unless you alter that by changing the switch point. It's like the TPS adjustment -- get the sensor set up properly, don't ham it by changing the offsets and scale factor.

The switch point is the voltage at which the AEM thinks stoich is occuring. On gas that's 2.38v (~14.7:1). E85 stoich I think is 9.8:1 and AEM just says "ethanol" and I don't know what their % is

Link will generate a square wave that simulates *narrowband operation (which is more sine) based around your wideband voltage and this switch point. When you're above this voltage from the wideband 0-5 analog output, Link tells itself that the mix is lean. When the AEM is below that voltage, the ECU is told you're rich. Factoring in proper cadence and smoothing and it does a pretty good job in lieu of a standard O2 sensor.

So, you must make sure that your voltage out of the AEM is correctly mapped in link. **The linear wideband should work with calibrated settings and If you're finding that things are still off, you could have a signaling voltage issue caused by a poor ground or ground location.

I've read that the AEM selection there doesn't play well with AEM widebands of certain varieties. Linear wideband with calibration is most likely your best option. This may help:

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*Edited: changed word to 'narrowband'
**Edited: removed redundant phrasing and reworded to me be more precise

 

[llxkevinxll]

Step 1 of all wideband gauge/controller vs. ECMLink logged value investigations is verify your positive and negative wiring for the gauge, as Curt mentioned above. If the AEM controller and ECMLink don't agree on what 0V is, you'll be chasing your tail on this issue. Make sure they are both sharing the same ground.

This guide is for an LC1 so the wire colors are wrong but the principles are the same.

lc1install [ECMTuning - wiki]

www.ecmtuning.com

 

[curt-s]

Also found this in my bookmarks which might be helpful

Wideband O2 Sensor Info | Six Sigma Dyno Tuning | United States

Six Sigma Tuning Wideband o2 sensor information

www.sixsigmatuning.com