There must be a way that you can record logs on your Palm when using the AEM UEGO. The gauge has extra wires and MMCD has alot of stuff thats not used. Im not the smartest when it comes to this stuff which is why I started a post so the people with brains can figure something out. A solution would be amazing

what version mmcd you using?

read this, theres probably some info you can use:
http://www.3si.org/forum/showthread.php?t=203226
i wanna hear this answer too

dsm link as well

I didnt know there were more than one MMCD. Im using MMCD tool and the basic software I guess?

if you look at the link i posted you will find a link to mmcd version 1.8g, assuming your a 3si member. that thread alone is enough information to make it worth joining 3si in my opinion. its not like it costs anything, and that thread talks about how to get any information about your car logged on your palm, almost. they figured out how to log boost, speed, and all this other stuff. mmcd version 1.4 is probably about what your using. 1.6f was the last pure version made by the original creator. it was some russian guy who just disappeared. no one knows what happened to him, so cbatters and some other 3si guys desided to continue developement of mmcd. the software is still free, but cbatters sells some hardware to make it easier for you to monitor some stuff. theres also some other guy with an offshoot. it sucks tho. its like version 1.71 or something. a lot of the stuff doesn't work. with version 1.8g just make sure your in dsm mode (the default is 3s mode) and your good to go. everything you need to know is on that site. im sure they have either made, or are working on a way to send the info from a wideband o2 sensor to your car. just read and you will learn.

Thanks for the reply. As far as making a wideband read signals, if they were in the process the way their cars do ti will most likley be completley different. I would think some sensor would need to be changed and adjusted to display the AFR. I am a member but I forget my member name, ill check it out when I get out of work.

Thanks,
Mike

Very good thread on there, it took me awhile to "get" what they were talking about............my problem is that I'm already using a GM 3 bar MAP on my DSM (I'm running an EFI PMS system) so from what I judge is that the TPS 5v would not need to be used on my setup, since my MAP sensor is already powered up. I'll just need to connect the ground and signal wires to the A22 connector.

Yes, it is possible. I've done it on my 2G.

I cut the wire from my rear O2 sensor and wired the wideband's 0-5v output into the ECU. Then I would log my rear O2 and get the wideband voltage.

Baron4406 said:

Very good thread on there, it took me awhile to "get" what they were talking about............my problem is that I'm already using a GM 3 bar MAP on my DSM (I'm running an EFI PMS system) so from what I judge is that the TPS 5v would not need to be used on my setup, since my MAP sensor is already powered up. I'll just need to connect the ground and signal wires to the A22 connector.

Click to expand...

a paralell circuit with the gm map sensor would allow you to have the same voltage for both things, but would only sacrifice current, which does not change the values seen by either unit.

99gst_racer said:

Yes, it is possible. I've done it on my 2G.

I cut the wire from my rear O2 sensor and wired the wideband's 0-1v output into the ECU. Then I would log my rear O2 and get the wideband voltage.

Click to expand...

is that less accurate? what causes narrow band o2 sensors to be less accurate than wideband o2 sensors. I always thought it was the wider range of voltage, 0-5 over 0-1. does the voltage of the 0-1 output change along a set scale, or is it somewhat random like the stock o2 sensor. aka is .5v half as 1.0v on the dot, or is there some scale that makes it differ from a linier scale.

what about us 2g guys, mmcd reads o2-r on my car as well, but I have no o2 sensor. The weird thing is that that value actually changes from day to day, but during one cruise it rarely changes. it normally hangs out at around 2.49v or something, and never changes during one ride out, but the next day may read 2.37v or something. what is my palm getting this reading from? I know with 1.8g I think you can change the scale of any value to anything, so if its actually some useful value that isnt o2-r, I could change it to what it really is.

tstkl said:

is that less accurate? what causes narrow band o2 sensors to be less accurate than wideband o2 sensors. I always thought it was the wider range of voltage, 0-5 over 0-1. does the voltage of the 0-1 output change along a set scale, or is it somewhat random like the stock o2 sensor. aka is .5v half as 1.0v on the dot, or is there some scale that makes it differ from a linier scale.

Click to expand...

Yeah, you caught my "typo". I meant to say to connect the 0-5v output from the wideband to the ECU. Good catch. (I correct my first post.)

I dont have a second o2. I forgot to list its in my 92 AWD. So what would I need to do? Thanks for the replies!!

I had my AEM wideband loggable on my '92 Stealth R/T TT with software from Mirage Automotive (Shiver91VR4 on 3si). You have to connect the 0-5V 02 wire to the unused EGRT connector on the firewall (3/S's, I don't know the details on DSM's).

I just got another (3rd) '90 turbo DSM though, I plan on getting another AEM wideband for it when I'm ready building it up to that point, and of course would want to log.

TajMan said:

You have to connect the 0-5V 02 wire to the unused EGRT connector on the firewall (3/S's, I don't know the details on DSM's).

Click to expand...

same thing for us. its too bad there aren't more than one port you can use. that egrt port is very nice to have since a lot of people tap in a 0-5v boost sensor, and I didn't realize until now (as stupid as that may sound) that anything you want to log, you can just send a 0-5v feed into that port. Again, its too bad there is only one.

So there is a port that I can put the wire from the wideband into? Thanks alot for the help guys!

-Mike

Where is this spot that I can tap into? Also which wire from the Wideband should I be using?

Thanks,
Mike

its like pin a22 on the ecu or something. find the diagram for the wiring harness of the ecu and which ones are for the egrt, then put the 0-5v wideband o2 sensor signal into that. I'm sure the wiring diagram for the aem came with it, so you can find out which wire to use from that. If you do find the wiring diagram, please post it here as I need it as well later down the line.

Here is the pin out for the 1g ECU. http://www.vfaq.com/FAQlocator-index.html

If that wont work just go to the FAQ locator,electrical, and then to ECU pinouts for 1g turbo.


I see an EGR pin on #53, #15.

I appreciate the help so far!

Boost95 said:

Here is the pin out for the 1g ECU. http://www.vfaq.com/FAQlocator-index.html

If that wont work just go to the FAQ locator,electrical, and then to ECU pinouts for 1g turbo.


I see an EGR pin on #53, #15.

I appreciate the help so far!

Click to expand...

should be number 15 with the other side grounded. let someone who has actually done this mod answer though.

do you just tap the positive side into pin #15 and ground the other side?

edit: btw if thats the case, we can use both those pins for info, but I dont think mmcd logs egr valve, just the temperatures.

Yea, hopefully someone will post up because I know nothing about this. Wil be very nice once its hooked up tho

Kmon, which one is it?

You want to tap into pin 15 for EGR Temp input.

Hey guys, I was just wondering when you hook up your WB output to the ecu pin(s) and log on the palm, how do you get an accurate idea of what voltage corresponds to say a 12.5:1 AFR or something like that. Maybe I missed a piece of info, but I'm curious how to get the proper scale. (I don't have a WB yet, just researching before the purchase).

mmcd has all sorts of scales, I believe 1.8g has scales for wideband o2 sensors as well. I think its just a few taps and your done.

Ok, I will give it a shot if I have time later on. I will post how it works when I try it. When im looking on my palm what will it be under? EGR temp?

Thanks,
Mike

Ohh yea, which wire from the gauge do I use? I think there were 3 of them.