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Can the AEM UEGO controller log lower than 10.0 AFR?

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streetdsmpwr

10+ Year Contributor
322
3
Oct 13, 2009
Canton, Michigan
I'm trying to decide which wideband to go with and the AEM seems to be the a good choice but I noticed that the gauge only reads to 10.0. I know that this is pretty rich already but I might want to be able to log below that just in case. Does anyone know?
 
I'm trying to decide which wideband to go with and the AEM seems to be the a good choice but I noticed that the gauge only reads to 10.0. I know that this is pretty rich already but I might want to be able to log below that just in case. Does anyone know?

WTF 10.0 is super super rich as it is, why would you want to read lower?
Consider yourself lucky, I got the first batch of uego's, mine will not read lower than 11.1
 
Well soon I am going to be installing injectors, AFPR, and pump and with it I have a conservative 11.0 target AFR tune I am going to flash to it, so I won't be able to tell between running 1.0 AFR rich or 3.0 AFR rich. After thinking about it I'd rather be able to tell if I'm lean more than if I'm rich.
 
Our cars (and others) run 9.x:1 from the factory, i'm thinking you would want it to read lower.

Yes they do, but why would you want to tune for anything richer than 10.2. 10.6 is the richest I've seen someone tune and that is on a big turbo. 80% of people do 11.2-11.5afr
 
Well I want to make sure everyone understands, I know the gauge doesn't read lower than 10.0, but I'm wondering if I use the serial output to log on my laptop, will it be able to log below 10.0. If you buy the sensor without the gauge from AEM I think it said that is reads 8.5 to 18.0.
 
Yeah I see where your coming from but there are still times when reading below 10.0:1 is what is needed, kinda of like when you got a launch control/anti-lag or if its just a stock car.
No it's not needed. If your richer than the gauge reads it will just say --- and the green rich light is on.
There is not need for anything more than reading into the 10.0. Reading 11.1 for me is plenty and look at my setup, I can only guess it's way more than yours.
 
I think the UEGO was designed more for NA cars that don't run that rich.

All factory turbo cars run below 10:1 AFR on the stock maps. Mitsubishi, Suburu, Nissan, etc.

Its nice to know how rich you are, as there is a big difference between 10:1 and 9:1 tuning wise.


For the above reason alone I would choose a different a different WB. But the UEGO has a lot of other issues, such as it analog and serial outputs.
 
My AEM UEGO run in the rear o2 spot reads lower then 10 and higher then 18 when logging thru evoscan
 
My AEM UEGO run in the rear o2 spot reads lower then 10 and higher then 18 when logging thru evoscan

Thats interesting. Do you have it hooked up to the gauge as well?

To anyone who has an Innovate LC1 I am wondering if it is any harder to install than the AEM and how can I use evoscan to log with it or the logworks software it comes with?
 
Thats interesting. Do you have it hooked up to the gauge as well?

Yes The gauge will read --- and evoscan will still display numbers I am up to 19.3 I have seen with my 02 to DP gasket is leaking.

And for the evoscan you just select LC1 as your datalogger and select it under the list of items you select to log. If very simple you can use a few different ones, you will need a serial port or a serial to usb converter know to work with evoscan. Check out there webpage openecu.org

Also with evoscan and the open port 2.0 cable you get the ability to flash 98-99 ecu's along with other cars like evo's,sti's etc. Your total cost is EVOSCAN($25)+OP2.0($187)=$212 and evoscan has great feature for the price I don't think you can beat it when I spent $170 on my pocketlogger w/software & cable and then $180 on Palm Color screen. This is way more for your price, yes you need a laptop but I got a mini one for $280 and it serves many purposes.

Also with the OP2.0 you can log to SD car and have logging triggers like RPM and A/C ON button activation. You will not need a laptop all the time just take the SD mini card out and bring in the house.
 
I just got my openport 2.0 and evoscan a couple days ago but I haven't gotten it to work yet. I tried it on my dads netbook and it keeps freezing every time I click "start datalogger". So what your saying is that the AEM logs lower than 10.0?

I still want some more information on the LC1.
 
Here's just my opinion....

I had a new style AEM UEGO in my Talon and it was ok. However, when I was tuning (through DSMLink), I ran into two problems. One was that when I made changes and the AFR went well below 10.0:1 (on purpose or not), the gauge would read "---" and the log from link would just say 10.0:1. So I could have been runnin 9.99:1 or 7.0:1 and had no idea. The other issue was the what I saw in link and what I saw on the gauge was never the same. I tried all the tricks to get it to match, but it was never quite right.

So that's why I picked up the LC1. It was a little more difficult to install since you have to calibrate it, but I feel like that helps it become more accurate. You have to run the software that comes with it to setup the outputs of the gauge. There are two outputs, one for the gauge and an extra which I am using with DSMLink. The install guide that comes with the LC1 tells you how to set it up for narrowband simulation and wideband analog output for any configuration. It took a little more time, but was well worth it. Plus now when I log in DSMLink, the numbers match!

So in my opinion, go LC-1. It's about the same price as an AEM unit and is simply better. PLUS, I think I remember reading some article a while back that testing all the leading WB units and the LC1 beat out the AEM for accuracy.
 
I'm pretty sure it came with the serial cable. I used a Serial/USB converter with it, no problem.
 
To log in evoscan you can't select DSM/3000GT/ECLIPSE you need to select Mitsubishi MUTIII

Then you should hear Link Engaged and the box on the right should turn GREEN.

That should be the problem. I am using Beta 2.7 Evoscan just redid there site which is now way more informational and helpful to us

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And yes I have my anti-lag set at 9.8 and I have seen that number in Evoscan log before!
 

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