AEM X-Series OBDII Wideband UEGO AFR Sensor Controller Gauge

OK. I THINK I have an idea to get dual AFR working.

It looks like there is not enough codespace left over in the 30-0333 gauge CPU to handle the master/slave arrangement that would be necessary to handle 2 channels.

But, I THINK I can squeeze it into one of the inline ( non gauge ) UEGOs . So, in this case, you would need to run either one gauge and one inline; or, two inlines.

In each case, the 2nd channel would be a standard ( non OBDII ) 30-0300 or 30-0310.

So, the kit would be a re-flashed 30-0310 with an OBDII adapter cable. To be paired with a standard 30-0300 or 30-0310. And would be "some assembly required" wiring-wise.

-- in progress...

Interesting, keep us posted. I've got 2 -0333 units I still need to send to you, if waiting a few days will enable this dual WB functionality I might do that.

It will be a bit more than a few days. I need to see how much demand there will be for this setup, before investing the time it will take to get it all working. I need to be able to sell AEM on the idea.

Im surprised AEM doesnt already do it. The MTX-L stuff does a similar setup. where they have 1 gauge with both read out's, but one of the widebands is just the lc2.

That is a LOT easier, using RS-232 serial daisy-chaining; rather than mixed OBD and non-OBD over the same CAN bus.

The real problem is that EFILive only allows for 2 controllers/id's on the CAN bus...

one of them will always be the ECM, leaving only one available.



( would be nice to have multiple controllers, e.g. log from ECM, TCM, and dual AEM's, and anything else (e.g.potentially dyno) simultaneously. )

That would make my part a lot easier. But, I'm guessing that I am going to go with the master/slave arrangement.

Maybe, what I need to make is a generic OBDII/CAN data consolidation device that can offers multiple data channels on a single ECU ID from external sources.

Ok... I THINK I have dual bank mode figured out.

I had to sacrifice the serial output to make room for the code. But, everything is in there with 33 bytes to spare, now :)

I have a bit of testing to do.

Cool :cheers: good job :cheers:

OK. Everything looks good on the bench test for dual banks with the updated firmware. I did end up having to sacrifice the serial data output to get everything to fit. But, other than than, no casualties. I need to set up a live test with a vehicle to get it all finalized. I hope somebody actually uses this :)

dr.mike,

serial comms is irrelevant when CANbus outshine's it.

do you want us to test it out on Martin's Camaro (I have to find out where it is)...?

do you have two units...?

with high sample rates, I'm sure a lot of shops will run dual 0334's given the tuning advantages.


~Moderator~

Unfortunately, I am working with naked PCBs. I will need to re-flash a couple of units to get the car test done.

I'm not sure AEM will be picking up this change in the 30-0334 ( not an official part number ) . They have already done a bunch of testing on the previous single-channel version.

What about the 30-2340? I have these installed on an engine dyno and I would be interested in getting 8 wideband data to the scan tool.

Thanks

This trick only works for the x-series widebands, so far.

Not sure if they are planning to implement it on the other widebands. Or, if it's possible.

OK, I have this week open to do some testing. I can bring the re-flash tool to wherever the Camaro is.

OK, let me see what's going on with Martin's Camaro.

Do you have two 0334's...?

I only have 1 full unit. The other is just the PCB. But, I can reflash the units on the car.

dr.mike,

I'm sorry for the delay, I've got some family stuff going on.

Let me find out from Martin when we can test this.

Progress ?

First, dr.mike, thanks for flashing my 30-0333, it's working great!
I was using it the other day, and I couldn't quite figure out how to log it in the v7.5 scanner, though it worked fine in v8. Is this user error, or just not an option?

Also, has anyone set up a custom PID that converts lambda to AFR for this setup? I didn't see one in the thread, but I may have missed it.

Quote:

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Originally Posted by required field

First, dr.mike, thanks for flashing my 30-0333, it's working great!
I was using it the other day, and I couldn't quite figure out how to log it in the v7.5 scanner, though it worked fine in v8. Is this user error, or just not an option?

Also, has anyone set up a custom PID that converts lambda to AFR for this setup? I didn't see one in the thread, but I may have missed it.

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Can you post a log file...

did you select the pids SAE.WO2S11 and SAE.WO2S21 to log (because EFILive might have the channels swapped)...?



I have can make a calc pid to show AFR (IIRC, AEM assumes AFR is 14.57).

I'm not sure. But, I don't believe that the 7.5 software was updated to read the 30-0333.

Quote:

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Originally Posted by dr.mike

I'm not sure. But, I don't believe that the 7.5 software was updated to read the 30-0333.

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You can, but it'd be the only controller. V7.5 only supports logging of 1 controller at a time, it's a known limitation of it. V8 lets you do 2, which is why you can log a PCM/ECM and the -0333 simultaneously.

That makes sense :)

Quote:

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Originally Posted by joecar

Can you post a log file...

did you select the pids SAE.WO2S11 and SAE.WO2S21 to log (because EFILive might have the channels swapped)...?



I have can make a calc pid to show AFR (IIRC, AEM assumes AFR is 14.57).

---

I was just using one (and the readings looked correct, just lambda values instead of AFR, compared to the AEM's gauge.) I forget which, was using a different machine I don't have handy at the moment, but pretty sure I was using WO2S21. Will make some new logs and post soon.

It was WO2S11, here's the file, having some trouble importing the BBX file into the v8 scan tool, when I pick the trans controller, AEM UGEO Bank 1 isn't an option in the "select controllers" menu, and when I select it from the drop down, v8 clears the tune file, so that appears to be a bug in the current release.

Attachment 20811

I see your pid SAE.WO2S11 behaving like wideband lambda... it is usually about 0.99 and dips down to 0.6 or so.

Yup, that's working; did you have a calculated PID to convert the lambda value to AFR you'd be willing to share?

Quote:

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Originally Posted by required field

Yup, that's working; did you have a calculated PID to convert the lambda value to AFR you'd be willing to share?

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Yes, I do...

did you edit your calc_pids.txt file...? if not then I'll post it tomorrow (I'm not at home at the moment).

~Moderator~

I've not touched my calc_pids.txt.

Thanks!

Quote:

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Originally Posted by required field

Yup, that's working; did you have a calculated PID to convert the lambda value to AFR you'd be willing to share?

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The attached calc_pids.txt file defines the pid CALC.WO2S11.AFR... please use this pid to display wideband AFR

( and use SAE.WO2S11.lambda for tuning, e.g. use CALC.WO2BEN ).

Just tried it out, works great!

Giving this a bump since it went dead, is there going to be a production unit offered? All I see listed anywhere now is a p/n 30-0333 is the p/n 30-0334 a special order from AEM and we then still have to bother DrMike for a reflash to drop the serial com so dual WBO2 daisy chain can be used?

Thanks
Robert

Just use the analog signal. It's spot on with the digital gauge and quicker then the serial connection anyway.

The AEM guys have been swamped, lately. I think, mostly with the response to their CD-7 display thing. So, they have not had time to test/qualify the new 30-0334 firmware. We kinda threw a monkeywrench into the process by doing the dual-channel thing, after they tested the original EFILive changes. So, they probably don't want to release the single-channel version, then the dual channel version. And just make one part number.

The dual channel firmware passed the bench-test, here. But, needs to be field tested.

I'll see if I can check in on them this week.

The dual channel option is there going to be two gauges needed to run both sensors? Sure would be nice just to have one to cut down on the clutter and still have 2 wideband sensors.

Yeah, it would currently require 2 gauges. I can probably set up a 30-0310 to act as the second channel. But they are hard to set up, because they have no UI. It would always need to be 500kbps 11-bit ECU 0x7E6 PID 0x25
At least, that would clean things up a bit. :)

Good news. AEM has finally released the 30-0334 replacement for the 30-0333. This is the equivalent to the most recent re-FLASHed units that I have been doing. They support dual widebands with EFILive. ( which is no small feat :grd: ) Unfortunately, it was too late in their process to get them to add the spare pins for the analog/serial interface. :(


Double-check, when ordering from a distributor that you are getting the 334 and, not any 333's they may still be in the pipe. 30-333's work via OBDII, only with brand 'H' scan tools.

This probably deserves it's own thread...

Awesome.

I wonder if i can get the e38/e67 to read and use this data.

dr.mike,

cool :cheers: thanks.

so you can connect dual -334 wideband controllers to the CAN bus and be able to log both widebands from EFILive;


we need to give this some exposure... I'll make a nice thread (I may need to borrow some pics).



( and I'm going to budget myself to get a pair of these for my own use )