AF#3 (Rear O2 sensor) correction limits

Bamofo · **Joined:** Mon Jul 02, 2007 7:46 am **Posts:** 430

Makaveli wrote:

Ok got it. I'll report back when i test it out.

Edit: So should i leave the AF3 Correction limits at there default 50.00 -50.00

Change both what you had before, and what i gave you all to 0 and try it.

Makaveli · **Posted:** Mon Nov 07, 2016 11:15 pm

Bamofo wrote:

Change both what you had before, and what i gave you all to 0 and try it.

Works Perfectly! Targets 14.7 idle/cruise.

So i was able to do this mod http://forums.nasioc.com/forums/showthr ... ?t=2805570
and have my wideband read through BtSsm

Thanks again for the help Bamofo

welaish · **Joined:** Tue Apr 29, 2014 12:48 am **Posts:** 946

Makaveli wrote:

Bamofo wrote:

Change both what you had before, and what i gave you all to 0 and try it.

Works Perfectly! Targets 14.7 idle/cruise.

So i was able to do this mod http://forums.nasioc.com/forums/showthr ... ?t=2805570
and have my wideband read through BtSsm

Thanks again for the help Bamofo

any information for RR logger definition for human readable AFR?

welaish · **Joined:** Tue Apr 29, 2014 12:48 am **Posts:** 946

Another question how did you drive the car without the rear o2 sensor and not getting into limp mode?

Makaveli · **Posted:** Tue Nov 08, 2016 5:05 am

welaish wrote:

any information for RR logger definition for human readable AFR?

Not exactly sure what you mean. But i basically log the rear o2 voltage which would be 0-5volts however in btssm you add a look up table
I think it can be added to RR
here is an example from legacygt.com/forums
AEM UEGO is: 0v=10.00 afr and 5v=19.98 afr
((19.98-10.00)/5)*(x/200)+10.00

I'm sure it can be added somehow. someone here could verify.

welaish wrote:

Another question how did you drive the car without the rear o2 sensor and not getting into limp mode?

Have you tried this? There's quite a few in the US not running them on 32bit ecu.

Kodename47 · **Joined:** Sun Jul 13, 2014 6:12 pm **Posts:** 111

The 3 AF #3 addresses I have for ZA1JA01G are:

Code:

<table name="A/F #3 CL Target Compensation Limits" storageaddress="61324" />
<table name="A/F #3 Learning Limits" storageaddress="609A0" />
<table name="A/F #3 Correction Limits" storageaddress="606C0" />

However, searching the above string Bamofo suggested returns address 60088.

I get the AFR drop to 13.7 when dropping into closed loop and then returns to 14.7 over time. I also have no rear O2. This has been driving me crazy for some time and is the last issue I really need to resolve.

Bamofo · **Joined:** Mon Jul 02, 2007 7:46 am **Posts:** 430

Kodename47 wrote:

The 3 AF #3 addresses I have for ZA1JA01G are:

Code:

<table name="A/F #3 CL Target Compensation Limits" storageaddress="61324" />
<table name="A/F #3 Learning Limits" storageaddress="609A0" />
<table name="A/F #3 Correction Limits" storageaddress="606C0" />

However, searching the above string Bamofo suggested returns address 60088.

I get the AFR drop to 13.7 when dropping into closed loop and then returns to 14.7 over time. I also have no rear O2. This has been driving me crazy for some time and is the last issue I really need to resolve.

If you send me the rom i can take a look and map it out if you like.

Bamofo · **Joined:** Mon Jul 02, 2007 7:46 am **Posts:** 430

welaish wrote:

Another question how did you drive the car without the rear o2 sensor and not getting into limp mode?

You turn off the rear 02 Compensation and turn off the CEL's for Rear O2.

Done.

roziV · **Joined:** Sat Oct 29, 2016 5:40 pm **Posts:** 83

td-d wrote:

GADzik wrote:

Hi guys, anyone knows please tell me the address for Subaru Forester EDM A2ZJ500F thanks

Code:

ROM:0005320C AF3_Adder_Remove:.float 0.000244
ROM:00053210 AF3_Adder_Add:  .float 0.000168

ROM:0001E044 Closed_loop_fueling_target_comp_RearO2_max:.float 0.5
ROM:0001E048 Closed_loop_fueling_target_comp_RearO2_min:.float -0.5

I just tried it out but it seems I have SOME af3 correction that I still cannot understand well.
You can see below its bouncing around 0.16

Attachment:

corr1.PNG

And few seconds after to 0.00

Attachment:

corr2.PNG

Here are the changes made:

Attachment:

before.PNG

Attachment:

without.PNG

I am not sure it is a problem after all but still. I even got 0.08 for a moment or so.
Anyone experienced it? It's in idle btw (I guess you got that from the screenshot but just to clarify). Not sure if I should attach the rom but if needed for assistance I'll be more than welcome. I just got few modifications due to the decat (avcs, init/max duty etc).

Anyone?

roziV · **Joined:** Sat Oct 29, 2016 5:40 pm **Posts:** 83

I'll try to zero-out the compensation limit at 58bc0 to see how it goes.

The problem is I've found another one with 4f22 on 20298 which for me makes more sense since it is closer to the 01e*** according to the patterns I've seen already in the thread.

welaish · **Joined:** Tue Apr 29, 2014 12:48 am **Posts:** 946

can you post the values for AZ1G700K?

roziV · **Joined:** Sat Oct 29, 2016 5:40 pm **Posts:** 83

Just to confirm for a2ZJ500F the right address is 20298. I just tested it

td-d · **Posted:** Sat Nov 12, 2016 3:13 pm

welaish wrote:

can you post the values for AZ1G700K?

2D9A0
and the AF3 correction limits are at 2F348.

welaish · **Joined:** Tue Apr 29, 2014 12:48 am **Posts:** 946

td-d wrote:

welaish wrote:

can you post the values for AZ1G700K?

2D9A0
and the AF3 correction limits are at 2F348.

Thanks Works Perfectly.

welaish · **Joined:** Tue Apr 29, 2014 12:48 am **Posts:** 946

I am logging the AFR using the rear o2 sensor voltage. But the data is lower by 1 AFR than the gauge. Is there a way I can adjust it?

it looks like its inconsistent I logged Vout Voltage and AFR on gauge. attached the file, any help would be appreciated.

Attachment:

romraiderlog_02_20161204_070226.csv

RomRaider

AF#3 (Rear O2 sensor) correction limits

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