Datalogging AFR with your Autocal

[derek1387]

Hello all! I know this is more needed in the tuning thread, but figured since so many of you are going with Overkill tunes and Autocals, i would post it here too

I just modified my Autocal to work with a serial wideband so you can read wideband/AFR and datalog for your tuner to get better information.

This WILL void your warranty on your autocal...but...what do we care about warranties around here?

The Autocal will only accept serial inputs, but takes some modifying to work, as it is not natively able to do so. however it does have the contacts inside to make it work.

For this, you will need the following:
Serial RS292-DB9 FEMALE soldered connector

18-22ga multistranded wire

Drill bit or small round file

Soldering iron with fine tip

Silver solder

no. 1 Phillips screwdriver

patience and a steady hand.

So, here is your Autocal.


Here is the backside of the autocal. You will need to use your screwdriver to pull all 5 screws out, and put aside. Do not lose them.


When you open up the Autocal, this is what you will see (minus the red and black wires coming out. Those are what you are adding.


To pull the board out of the Autocal enclosure, you will need to squeeze the top of the autocal just a bit and pull the board straight up and out.


Once it is out, you will see RX, TX, VCC, RD and Ground. We will be using RX and Ground. Do NOT attach anything that would put power to the Autocal here. Nothing other than RX and Ground wires.






I used about 6" of red and black wire. Go as long as you want. The longer, the more room you have. Wrap the wire around itself, tin the tip, then insert into the holes/contacts on the GROUND and RX location. Use a FINE TIP soldering iron, and melt the solder on the contacts. When the solder starts flowing remove the soldering iron. You are done here.

Do not get solder across the other contacts. That will cause a short, and could potentially ruin the Autocal.


Next you need to modify the enclosure for the wires to escape without pinching.


Next is the wiring on the serial connector






Again, tin the wire, tin the contact, yada yada.

Once you are satisfied with your wiring, you can sleeve the wiring for a nice clean look, or leave it naked.



Once you are done with that, put the cover on the serial connector, and you are done with the Autocal!

I can provide this service if you are worried about doing this on your own. Just shoot me a PM and we can discuss.

I have this setup for Serial logging with my Innovate LC2 Wideband. As long as your wideband has a serial out, you should be golden.

All that is left is setting up Efilive and the Autocal software for reading.

Happy logging!


Again, contact me if you are not wanting to do the modification yourself. I can do it for a small fee.

[Shawno72]

Looks like I'll be voiding another warranty.

[Jason@JacFab]

Great write up!


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[derek1387]

And now that you have your Autocal wired up for a serial Wideband…you need to program it to look for the AFR/Wideband signal!

Here is how to do it in EFILive V8.

First, you will connect your Autocal with the USB cable to your computer. Then you will open up EFILive Scan and Tune, and click the Autocal icon in the bottom right corner to make sure it is connected and ready. You should see a green check mark. Once you have done that, click on Devices



Once you have clicked on Devices, you will see all the settings of your actual Autocal.
Click on Serial I/O, then change the Com Port to Wideband, and change the wideband at the bottom to your brand/model. If its not listed, there are ways around that. Contact me for details, or your tuner. When you have chosen those settings, click PROGRAM. That actually programs the Autocal with your settings. If you do not do this, the settings will not be saved.




Close that window, and you will be back to the home page of EFI Live. Click on BBX. This is the actual “logging” portion/settings of your autocal.



Here is the BBX Screen. Step 1, click Read. That will load BBX with the settings/parameters that are currently on your Autocal. Then, for Step 2, choose your ECM/Controller. For our purposes, (Camaro LFX) it will be marked E39. Make sure you highlight/check mark E39. Once you highlight your ECM (E39) the box below will populate your PIDS that are selected to be read on your Autocal. This is where you can see what is actually selected on your Autocal to be read.




Next, the box on the bottom right, you will search for Wide Band. You will see the proper things we need show up under Digital External Digital/Serial PID’s. What you will want is Wide band #1 Lambda, and Wide Band #1 AFR. Highlight both of these, then click the Green Arrow.




Once you see those in your PID list on your autocal on the left side of the screen, click Program. This again, programs these settings to your Autocal.




You have now setup your Autocal to read serial Wide Band AFR readings! Make your tuner happy and get better tuning results, from here on out!


Thanks for checking this out

[Shawno72]

Great job

[derek1387]

Bumping this up one more time for more Overkill converts!

[Shawno72]

And ad this while your in there.

[Mike413]

i like this...

[derek1387]

Well get her done! Totally worth it too!


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[Mike413]

Originally Posted by derek1387

Well get her done! Totally worth it too!


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i think im going to have to

[Shawno72]

Your engine will appreciate you and your right foot will love you