found the actual connection to make it work with the datalogit, i know some people dont like the AEM "i got both the LM1 and the AEM" but some owners dont have the privilege to buy both so here we go, this should be done by experience tuners that know what they are doing, improper tuning will result in a lot of money in repairs, in other words im not responsible for your actions, but the set up works for me and it match the reading from the gauge to the computer, enjoy, coments are welcome like always and if you find better numbers, please share

 

good stuff Francisco

 

SAVED! now I just need to do it. **** this is a life saver, I picked up the AEM unit for 170 bux and I keep getting ****.
THANK YOU THANK YOU THANK YOU
etc...

 

What polynomial are you using?

 

thanks

 

I found that my wideband gauges reads about .3-.4 afr lower than the logs

my .02

 

There were two separate production runs of the AEM UEGO wideband!

The early production units had a single voltage output curve that was NOT linear. I owned one. It's very difficult to get the display to agree with the Datalogit.

the current production model has a rotary switch on the back and a linear output ranging from 10-18.50 AFR.



I have never personally hooked up one of these models to a Datalogit, but here are the settings I would try first if you are using the wiring shown in the 1st post:



I'm a bit unsure about the AN2 settings since the voltage output is actually from 0-4.25 volts per the chart from AEM. It may not matter really.

I have no idea where the OP got his voltage range settings. I doubt his display agreed at all voltages. The AEM display has a very slow refresh rate (one reason why I've never liked it). It would be difficult to verify that the display and the wideband agree when you are boosting due to this sample rate.

 

I've always heard that the AEM unit was nonlinear, but this says that it is. Is it just the old version that isn't linear?

 

Yes. The instructions it came with were different and everything.

 

Is the rotary setting labelled in the back?

 

I don't think so, but its in the manual. If you don't have it anymore, I googled AEM UEGO and found a pdf version.

I just set mine up this way and it seems to be working with the datalogit correctly. There's just one thing, though. Is there any way to increase the accuracy of the log? Right now, it rounds to the nearest whole number. For example, 12.6-13.4 reads as 13 on the log. Is there any way to display more sig figs?

 

for watches, under the "setup watch" screen there is a drop box that is labelled "decimal places." under the "map watch" window, go to View-->decimal places

 

Awesome! Thank you very much.

 

which way do you have it set up? the way arghx has it setup?

 

Yeah. I wired it like in the picture at the top, then used arghx's settings. I don't know how exact the readings were because I didn't know how to change decimal places, so it rounded to the nearest whole number. I'll go out and check it next time I get a chance. It'll probably be monday, though.

 

bump, what polynomial are you guys using? The one that is already there or did you change anything?

 

you have 2 options when making an AUX you can either enter the values or the poly. if you change the values the poly changes automaticaly and if you change the poly the values change automaticaly

 

bringing it back from the dead! which one is more accurate FjDrx7 or arghx