Clearing things up, AEM UEGO.

[KFred 513]

There have been a ton of questions about the UEGO, and I have read through most of them. I am still left with some questions of my own.

I want to:

1) Use my gauge to display AFR
2) Log AFR to ECM Link V3
3) Simulate narrowband signal.

Is it possible to do this? Im starting to think its either Data log, or simulate NB, not both. If this is the case, what are my options to get my tune dialed in?

The bosch O2 that comes with the UEGO is in the O2 housing, and wired into the Front 02 pin.

 

[agentorange313]

There have been a ton of questions about the UEGO, and I have read through most of them. I am still left with some questions of my own.

I want to:

1) Use my gauge to display AFR
2) Log AFR to ECM Link V3
3) Simulate narrowband signal.

Is it possible to do this? Im starting to think its either Data log, or simulate NB, not both. If this is the case, what are my options to get my tune dialed in?

The bosch O2 that comes with the UEGO is in the O2 housing, and wired into the Front 02 pin.

this is what you are looking for:
http://www.dsmtuners.com/forums/articles-electrical-wiring/383190-1g-2g-aem-uego-wiring.html

If you have Ecmlink v3 you can simulate a narrowband signal. You would connect the white wire to your ecu, 2g being the 75 or 76 pin, and choose the simulate option in Ecmlink. Ecmlink will data log the wideband signal that you hooked up to the ecu.

 

[KFred 513]

this is what you are looking for:
http://www.dsmtuners.com/forums/articles-electrical-wiring/383190-1g-2g-aem-uego-wiring.html

If you have Ecmlink v3 you can simulate a narrowband signal. You would connect the white wire to your ecu, 2g being the 75 or 76 pin, and choose the simulate option in Ecmlink. Ecmlink will data log the wideband signal that you hooked up to the ecu.

Thanks for the link. It doesnt quite answer my question though. My sensor is wired in already, and the front O2 wire is tapped for ECU input. I have been reading there is only one additional output, being either NB sim, or 0-5v for logging purposes.

 

[agentorange313]

Thanks for the link. It doesnt quite answer my question though. My sensor is wired in already, and the front O2 wire is tapped for ECU input. I have been reading there is only one additional output, being either NB sim, or 0-5v for logging purposes.

Not sure if you used the wrong word, but you do not want to tap the wire for the signal. You want to cut the wire and feed the ecu side a new signal from the white wire off the AEM wideband.


The narrowband is "simulated" via Ecmlink, that mean that there is no direct narrowband input to your ecu.

The wideband signal, 0-5v, is what the ecu is now reading with ECMlink. Ecmlink then creates, simulates, a signal for the narrowband.

Some wideband have both 0-1 and 0-5 ouputs, but AEM only has 0-5v, the white wire.

 

[WES_393]

Not sure if you used the wrong word, but you do not want to tap the wire for the signal. You want to cut the wire and feed the ecu side a new signal from the white wire off the AEM wideband.


The narrowband is "simulated" via Ecmlink, that mean that there is no direct narrowband input to your ecu.

The wideband signal, 0-5v, is what the ecu is now reading with ECMlink. Ecmlink then creates, simulates, a signal for the narrowband.

Some wideband have both 0-1 and 0-5 ouputs, but AEM only has 0-5v, the white wire.

The white wire is normally 0-5v output for logging, but it can be switched to 0-1v for narrowband simulation as well by turning the internal dial. If I'm not mistaken, the position P04 is what you want for narrowband sim while P00 is for logging.

But otherwise this advice is spot-on. To my knowledge, the AEM UEGO cannot do both simultaneously. There is only 1 signal wire which will output either 0-5v for logging or 0-1v for narrowband sim. If you want narrowband simulation AND logging together, you'll have to use the narrowband simulation function in Link.

I've personally found Link's narrowband sim pretty tricky to get working smoothly. I've always had much better idle/cruise operation with the factory narrowband front O2 sensor. My engine ran great with the UEGO's narrowband simulation, but it took away my ability to log the AFR.

 

[GRAVEDIGGER]

The white wire is normally 0-5v output for logging, but it can be switched to 0-1v for narrowband simulation as well by turning the internal dial. If I'm not mistaken, the position P04 is what you want for narrowband sim while P00 is for logging.

But otherwise this advice is spot-on. To my knowledge, the AEM UEGO cannot do both simultaneously. There is only 1 signal wire which will output either 0-5v for logging or 0-1v for narrowband sim. If you want narrowband simulation AND logging together, you'll have to use the narrowband simulation function in Link.

I agree with Wes on this.

 

[Colt4G63 also]

I just run a narrowband in the O2, and log the wideband downstream. I think it's the best way to go.

 

[T is for TURBO]

I just run a narrowband in the O2, and log the wideband downstream. I think it's the best way to go.

I approve this message

 

[KFred 513]

Not sure if you used the wrong word, but you do not want to tap the wire for the signal. You want to cut the wire and feed the ecu side a new signal from the white wire off the AEM wideband.


The narrowband is "simulated" via Ecmlink, that mean that there is no direct narrowband input to your ecu.

The wideband signal, 0-5v, is what the ecu is now reading with ECMlink. Ecmlink then creates, simulates, a signal for the narrowband.

Some wideband have both 0-1 and 0-5 ouputs, but AEM only has 0-5v, the white wire.

Yeah I was rushing to get out of the house when I typed that. The wire is cut, not "tapped". And thank you for clearing up that confusion. I remember that it uses the 0-5v from the P00 setting and scales it down. I knew ppl were logging and simulating NB at the same time, just couldn't remember how it all worked.

The white wire is normally 0-5v output for logging, but it can be switched to 0-1v for narrowband simulation as well by turning the internal dial. If I'm not mistaken, the position P04 is what you want for narrowband sim while P00 is for logging.

But otherwise this advice is spot-on. To my knowledge, the AEM UEGO cannot do both simultaneously. There is only 1 signal wire which will output either 0-5v for logging or 0-1v for narrowband sim. If you want narrowband simulation AND logging together, you'll have to use the narrowband simulation function in Link.

I've personally found Link's narrowband sim pretty tricky to get working smoothly. I've always had much better idle/cruise operation with the factory narrowband front O2 sensor. My engine ran great with the UEGO's narrowband simulation, but it took away my ability to log the AFR.

I'm gonna take a shot at the NB sim for now and see how it goes. If it doesn't work right I'll have to weld in a bung and put a stock O2 back in it

 

[MY1GDSM]

I just run a narrowband in the O2, and log the wideband downstream. I think it's the best way to go.

This is going to be the best route and what I recommend.


OP

Honestly I'd just steer clear of a Ugeo all together... Every Other wideband on the market is going to update faster and give you more accurate readings... . But The short answer is you can do all that but it is less then Ideal

 

[KFred 513]

This is going to be the best route and what I recommend.


OP

Honestly I'd just steer clear of a Ugeo all together... Every Other wideband on the market is going to update faster and give you more accurate readings... . But The short answer is you can do all that but it is less then Ideal

Thanks 1g, you always come through with advice. I'll be getting out to Spokane about mid June so maybe I'll be seeing you sometime this summer.

Truthfully I've been reading bad things about the UEGO, but the car came with it. Right now I'm trying to work with what I have. I'm not going to be pushing the ragged edge with my tune so having the best WB might not be as crucial for me.

 

[jed344]

I had so much trouble getting my UEGO to log to ecm link correctly. Mine still is not reading same as the gauge so im just going off my gauge for the moment.