AEM Wideband with Microtech
 

I was reading about the aem Wideband (AEM 30-4100 UEGO Controller Gauge).

It says that it has one output wire that can be used to supply air/fuel ratio's to aftermarket computers. Does anyone know if I could use this to supply info to my Microtech LTX8 rather than using the stock O2 sensor?

The reason I am asking is that I currently have Autometer Nexus Gauges. I don't think that the wideband nexus gauge has this wire. If I can use the AEM wideband to supply AFR's to the microtech, I might opt for this wideband over the Autometer Nexus.

thanks

I was thinking of the same thing but usinga Innovate LC-1 wide band
http://www.innovatemotorsports.com/products/lc1.php into the SSI-4 http://www.innovatemotorsports.com/products/ssi_4.php
and use the 0-5v out to the o2 sensor black/red wire on the microtech but not sure if it would work on my LTX12S .

Ok I just found out you can as long as you have the 0-5v option activated. do you know wether you or not you have it activated ?

how do you know if it is activated?
i was curious about this too

if your microtech is not hooked up as a wideband option then hooking it up is worthless. microtech dosent even have closed loop. i think that the only m.t. that have wideband options are the 10/12

i was just hoping to datalog the afr, and the wide band option is stupid expensive from them.
oh well, one more reason i want to go to haltech.

yup..as far as i understand it...if its a stock computer then afr input is only narrow band...so you cant just hook up your wide band to it and it will work.. this is shitty though..because almost all decent computers out there give you that option stock.

you should be able to data log a/f on the wideband just not through the microtech but through the software supplied with the wideband

You will need the wideband option installed to use the 0-5V signal. It's available for the LT8s and above. Some have it installed at the factory.

I don't believe there is any way of knowing whether it is installed.

Note that the AEM also has a narrowband output option which can supply the ECU with a simulated narrowband signal. I've been told this doesn't work, but I can't see any reason why it wouldn't and have not tried it myself.

The LC1 has the same narrow band option...and the dispaly only shows like 2 or 3 figures...10.X and 16.X as far as I remember..i had removed it..so i am not too sure.

The problem with that is that unless you can also log the rpm and boost on the same datalog with the wideband it becomes very difficult to correlate whats going on with all 3 parameters making it a little harder to tune

The LC-1 is a wideband and it comes with a software from innovate for the pc and you can track the afr on the pc and also they state that its compatible with the microtech .

what I had in mind was using the o2 input from the computer into the ssi-4 pic the signal from the ssi-4 and log it in the microtech software it should work .

If for some reason I can get it to work I'll just have to go with the innovate software to keep track of the afr.

Here is the answer to all of our thoughts and questions, I got this info from a micritech dealer/tunner he works on microtechs on a daily bases and this is what he had to say.
Tuner

13BT STARLET wrote:
What about if you have one of this innovate
http://www.innovatemotorsports.com/products/ssi_4.php along with there wideband sensor http://www.innovatemotorsports.com/products/lc1.php
could you use it and run 0-5v black/red wire and read of the the microtech software ?


The 0-5v is just to hookup your current wideband system to see the AFR on your laptop.

RYSO.
_________________
www.RYSO-TECH.com :
Builders of the Fastest Street & Strip Cars (and bikes) in Curacao.
Inhouse 224 DYNOJET chassis dyno.

I had to send the lt10 back to activate the o2 wire to read 5v,

so I hooked it up last night and reads aronud 2 points leaner than the guage,
I recalibrated the and tryed again same thing,

so it works but 2 points leaner

what exactly you mean by 2 points leaner ? Do you mean the reading should be 13.5 and instead it reads 13.3 or 11.5?

what type of sensor are you using to re4ad the afr's?

I also told microtech that I have the AFX by NGK and reads 9-16afr,

has an output of 0-5v,

got it running and if the guage shows 10.5 microtech shows 12.5afr,

not sure if the software has an option to calibrate the reading,

so is there any way I can calibrate microtech to get the reading right on the wideband?
or can I use anything on the signal line to slightly drop the voltage?

the microtech cant be calibrated.

if anything calibrate the signal coming in till its reading right in most ranges.(may not be possible).

so at idle even the microtech wont give a good read of afrs i got 10.3 to 10.4 and its hunting up and down idle screeen was at 17hg and 1.7 ms i think

You may be able to calibrate the output of the gauge with a simple voltage divider. Make one with a pot so you can adjust the voltage level the Microtech is seeing.

got a lc1 kit the other day wired it up and notced that the gauge is reading 11.2 and the data log is up around 18

now im confused :scratch:

which gauge is reading 11.2 and which is reading 18. Just for your info sake. The Lc1 has 2 output wires, the yellow and the brown. From factory the brown is the wideband output sending reading from 0-5v and that what you would hook up on you in car gauge, like ou db gauge or xd-16, etc. FRom factory the yellow wire is set to simulate a narrow band. If you dont have the wideband option installed on you microtech ecu the ecu wont read the the Lc1 outputs properly so the reading given is useless...you have to depend on the in car gauge or the logworks program on your laptop

the lc1 is reading the 11.2 and the microtech is , when its first conected to the labtop it read 10.2 then goes up to 18.0 and does not read any more (caps lock )and in the data boxes at bottom of screen and data log
i have to -5 volt option added to the ecu
have hooked up the brown wire from lc1 to the black /red wire for the ecu

caannot get the log works running as have to get a 9pin male to male (just to make my day lol)

That count up or first reading that doesnt chage the 10.2 that you see is the warming up stage of the LC-1. It sounds like the whatever voltage is being sent to the ecu is out of range for the ecu thats why it just stays at 18.
Why cant your logworks connect? The same way you connect your ecu to the laptop should work the lc-1. Just plug it in to the serial port if you have one..if not use a serial to usb adapter and hook it up. Remember to put in the terminator plug on the "IN" side of the LC-1 plugs and the connection to the laptop on the "OUT". You may have problems connecting bout the ecu and lc1 to the laptop at the same time.

What i would suggest is that you leave the brown wire attached to the in car gauge at first and use the yellow wire to feed the ecu. Use the LMprogrammer software and program the lc1 to make the analog output 1 (the yellow wire) output as a wideband. It may require some tinkering to get the lc1 in car gauge and th ecu to read the same or close enough by adjusting the values on the scale for the analog output 1.
You will have to set the values, cliick program. Turn off the power to the lc-1 and start to see what whappening. Be prepared to pull the sensor out and reset and recalibrate because after a while of tinkering the wideband may actup and require the heater and sensor recalibration

cheers yea have to either get the seril cable to usb or something

I have tried this (LC1 analog output 1 --> Microtech), but my programming with the LM-Programmer SW was not perfect, because I found out that the values are only displayed in two digits. (9,0 - 10,0 – 11,0 – 12,0 – 13,0 and so on)

What values have you programmed at the LC1 output 1 to simulate a narrow band, so that we can read right wideband values on the Microtech.

Unforttunatley i have not beend able to find the right points to date to simulate the narrow band...it gets frustrating doiing the trial error..especially when the it starts to act up and need to be recalibrated and i have to under the car and take out the sensor and do the reset. I tried this about 3 occassions pissed and left it. I may try it again today. It would really make life easier with tunning so i lift its worth the effort if it works out. had an idea in the latter part of my last attempt session which i am gonna explore further next time.

The approach I am gonna try is this..the Lmprogeammer has an option in the advanced section that allows you to set the voltage that the lc-1 sends to the output during warm up...so i would use this by trial and error setting different voltages and see what ecu reads out at the different voltages and use that to find the extremes of the scale in programmer and test it with the engine running to see how the in car gauge and ecu compare.

My ECU gives me readings to one decimal place with more variance than just .0. Looking at a log i have here of my ecu i am seeing the following figures: 10.6, 11.1, 13.6, 14.0, 14.7, 11.8, 11.9, 12.7, 12.0, 10.8,11.3,11.5,11.8,16.0,16.3. Although there aren't right they seem to show variance hence the hope of being able to give accurate readings.

I am in my car collecting data right now.. and this are looking promising so far.
Stuff far.
1) I only seem able to log between 10.6 and 14.7 on the mt ecu..which is strange..because i have seen it go up to as far 19afr before. But between these points where you wanna be on boost anyway so thata good enough for now
2) So far i have gotten an almost perfect co-relationship for 11.1-12.5 afr so far.

I have not driven the car..just doing this from my car parked in my driveway and turning on a revving. I am just sitting here with the car off watching the counters go up while the gas slowly escapes the exhaust...gone to be here a while....anybody got a snicker??? :D..will report when finished

I think I got it..at least for the 11.0 to 14.0 afr range. Here we go.

Go to your lmprogrammer ..analog 1 or 2 which ever you have connected to your ecu and use this setting

volt afr lambda
0.965 10.6 0.721
0.65 15.49 1.054

Thats what i used to get the following readings...the first column is the LC-1 reading and the second is the MT ecu handset readout.

Lc1 MT
11.1 11
11.3 11.1
11.4 11.4
11.5 11.4
11.6 11.5
11.7 11.6
11.8 11.7
11.9 11.8
12.0 11.9
12.3 12.4
12.4 12.5
12.5 12.5
12.6 12.7
12.7 12.5
12.9 12.9
13.0 13.0
13.1 13.1
13.2 13.2
13.5 13.5
13.6 13.6
13.7 13.7
13.8 14.0
13.9 14.4
14.0 14.5
14.1 14.7

NOTE: This is what work for me and my setup...it may vary for you. I have not driven the car to test it above below the 11.0 point, but i think its a start.

I would like you guys to try it and report back

yep i think thats pretty close i ran a log of lc1 and a data from ecu have a look and see what you think

how do you up load it as it comes up with invaild file

i had just copy and paste them....I had done it up in excel and just copy and paste it here. I didnt take mine from a direct log per say..just read the values from the gauges and noted them over a loooonggg time..

Just take some time and enter them down here

I don’t know what’s happened at the moment with my LC-1.
The LM-Programmer doesn’t save the new values from BluRR list.

I’ll trie it tomorrow once again.

its funny..it will give error messages about the range..I had to just kind of juggle the numbers.. as in each cell.. because essentially you switch around the graph against stock setup.

and of course you only need to do either the afr or the voltage..the ecu converts it for you

That was not the problem.
After clicking the program button it seems to be saved the new data into the LC-1, but when I look at the LT-10s I saw that there was nothing changes.
So I looked back to LM-Programmer and see still the default values. :scratch: :icon_no2:

What i do is..make sure the lc1 is plugged into the laptop before turning on the lc-1.
Turn on the lc-1
open the lmprogammer
set the values and click program
close the lmprogrammer software
turn of the lc-1
wait a few secs..maybe 15-20..then turn it back on and the new program is there...try that

This thing doesnt seem to be working properly..its not consistent..it does it own thing when it feels like :(

ok , now i know this thread is old , but i still cant seem to find a newer one
is it possible to use the aem uego controller gauge ?, but use the output that simulates the ernst cell narrowband ?