MSefi.com read only forum (Jan.15,2018)

I was running firmware 2.891 ( for many years ) and updated to the latest 2.920. Since then, I have a reading of 0.0 on my AFR in TunerStudio using any of the original dashes. ( My Innovate XD-16 still shows correct AFR ) If I change the project settings it will read 12.6 and sometimes square wave jump to 16.0 while driving, but it's not right. I have an Innovate LC-1 with 0-5 set for both outputs ( checked it last night ). I'm using output 1 and after checking it all this morning, the wiring is still fine to the MS-II.

What do I need to change in TunerStudio to reflect my AFR setup or to troubleshoot? I've only played with the Project Settings and set it to Innovate LC-1 Default.

Thanks!

Edit: Forgot to mention the little terminator plug for the LC-1 is connected.

Did you calibrate the AFR table after the upgrade?

LT401Vette wrote:Did you calibrate the AFR table after the upgrade?

I did and left it at defaults, but I didn't do that after updating the project settings. I want to think that I had it set to Innovate LC-1 0-5 but can't recall exactly. Will doublecheck when I get a break this morning.

TY

I tried both Innovate LC-1 Default and Innovate 0-5v and AFR stays at 0.0. The properties in the panel are grayed out when I choose either of them in the Calibrate AFR dialog BTW.

I haven't changed my setup in 3 or so years. Did they change an input pin for AFR or something?

NOTE - I have EGO control turned off ATM.

Maybe I should connect it to the Stimboard and see if I can get it to move... I did that during the firmware update - maybe it blew something when I was playing with the pots?

That would probably be a good idea..

the one thing that makes me thing that isn't it, is that normally it should never say 0 AFR. On every calibration I know of 0v = some some number above 0.

When using the 3.83 firmware that comes with most MicroSquirts you need to use the TS beta for Calibration, but it looks like 2.92 should still be fine with the stable 2.0.x releases.

LT401Vette wrote:That would probably be a good idea..

the one thing that makes me thing that isn't it, is that normally it should never say 0 AFR. On every calibration I know of 0v = some some number above 0.

When using the 3.83 firmware that comes with most MicroSquirts you need to use the TS beta for Calibration, but it looks like 2.92 should still be fine with the stable 2.0.x releases.

I updated some info in my 2 previous posts while you were typing that response.

I'll try the stim tonight.

Ty again!

Connected the Stim board. Rotating the AFR modifies the RPM but AFR on TunerStudio MS remained 0.0. I turned on EGO and chose single Wideband and now the AFR reads 9.0 but doesn't move.

Any ideas?

Thanks!

I didn't recreate the tune from scratch when I upgraded. I allowed TunerStudio MS to make the changes. I just read a bit here: http://www.megamanual.com/ms2/code.htm#downloader

"Note that you will need to create a new MSQ by hand rather than rely on the tuning software to correctly interpret an old version (you can export/import the tables to save a lot of effort retyping the MSQ settings). Here is the help file for this code."

That states I need to manually rebuild? Is that valid? =\

Edit - I went ahead and rebuilt it along with a new project. Sitting on it till I hear back from ya tho. ;)

That is probably a very old statement. Like 10 years ago when megatune saved binary tunes.
You can import your last msq and simply review any warnings.

I wouldn't worry much about that.

Still no luck. Where can I find my old 2.891 to reflash so I can see if it's a hardware issue?

Thanks.

Ugh. Found 2.891 and pushed it to the ECU. Same problem. Guess I need to troubleshoot circuitry now.

Huh.

Forgot to recalibrate the AFR on 2.891 before my last post. Recalibrated and the O2 pot moved the AFR. I flashed back to v2.920 and now it moves the AFR from 7.5 to 10.5 ( original v2 Stim ). Will plug it back into the car in the am. /crossfingers

Success. Guess I just needed to reflash it?

When I first upgraded a week ago, it didn't act like it did last night. A week ago, through some choice I made, I had to choose the type of Megasquirt ECU I was using. I typed 2 and it populated the fields then realized I should have typed 1 since I have a MS-II. It didn't reload defaults for the choice of 1 I don't believe, so I then restored a 2.891 tune and had it convert it properly to the 2.920. This time, I never had to set the ECU. Maybe that was the issue - I had chosen something that required me to choose the ECU, and I mis-chose it ( and it populated fields ) then corrected it and it didn't update the fields and maybe carried along wrong data?

In any case, all seems good now. Thanks for the advice!

Fordfan,
I had the same issue. Ran 2.887 for years, updated to 2.891 and didn't notice that AFR was stuck in my logs. I did trace the voltage swing from the O2 pot all the way back to pin #28 on the processor board. So I figured it had to be something. I was going to post a question, when I came across this thread.. I did what you did, went back to old flash and calibrated it.. then it worked.
I just want to thank you for your notes on it, I was about to tear out my hair..

Thanks!
Dick

Mr Gadgets wrote:Fordfan,
I had the same issue. Ran 2.887 for years, updated to 2.891 and didn't notice that AFR was stuck in my logs. I did trace the voltage swing from the O2 pot all the way back to pin #28 on the processor board. So I figured it had to be something. I was going to post a question, when I came across this thread.. I did what you did, went back to old flash and calibrated it.. then it worked.
I just want to thank you for your notes on it, I was about to tear out my hair..

Thanks!
Dick

Awesome! Glad my followup helped!