AF#3 (Rear O2 sensor) correction limits

td-d · **Posted:** Sat Sep 19, 2015 9:23 pm

Perscitus - AF3 and AF4 correction and learning use the same thresholds in the code:

Code:

033E5C Rear_O2_comps
0359A0 AF_Correction_3_Thresholds
0362B8 AF_Learning_3_Thresholds

Perscitus · **Joined:** Mon Mar 09, 2015 4:22 pm **Posts:** 76

td-d wrote:

Hey Perscitus - sorry mate, been stupidly busy at work for the past few months - I'll have look.

No worries at all. Thanks for the reply!
I've sent you a (hopefully) decent donation today.

Can you ping me offline (to the email I paypal'ed you from if possible) re how exactly Ed can use the addresses.
I'm just learning at this stage and have come a decent way, but I can't figure it out.

Can you reply to the DE5F201B thread in the experimental definitions section if you find any tables in the ROM that control Bank 2 fueling?
They should be there, just like Injector #2 PW is.

td-d · **Posted:** Sun Sep 20, 2015 8:09 am

I'll apply them to the Xml and send you the defs and base.

Perscitus · **Joined:** Mon Mar 09, 2015 4:22 pm **Posts:** 76

Worked flawlessly for an H6 (EZ36D), AF #3 and #4 learning and correction have both been disabled.

Question - if I have the thresholds set to 0 (min/max), is there any significance to Closed_loop_fueling_target_comp_RearO2?
Or is it effectively disabled either way?

td-d · **Posted:** Mon Oct 05, 2015 4:17 pm

Not sure to be honest - mostly, I've seen both being disabled.

Blackmambo90 · **Joined:** Fri Jul 24, 2015 12:20 am **Posts:** 3

Hi,
How to do it on 2004 (2005) jdm lgt? a2zjc00b
Thks in advance

redwagon · **Posted:** Wed Aug 17, 2016 10:43 pm

I searched for the string 3F000000 BF000000 4F22C79A F808D59A in A2UH000A and couldn't find it. A little help please? Thanks.

Stiaiski · **Joined:** Thu Mar 31, 2011 3:31 pm **Posts:** 14

Any ideas on E2ZD507C ?
I found 4 instances of 3F 00 00 00 BF 00 00 00, and 3 of BF 00 00 00 3F 00 00 00.

Or in this ecu it is fixed by zeroing the adders?
Still new to IDA so I have no idea how to find those here. Would appreciate explanation on how to find as part of my learning process.

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

TD-D Can you confirm on Rom DZ1E103B That Rear AF is @ 2FD80

Looking for Both AF3 AF4 for the EZ36 Comps.. Let me know!

td-d · **Posted:** Fri Sep 16, 2016 9:40 am

ROM:0002FD80 AF3_Correction_Limits:.float 0.5

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

td-d wrote:

ROM:0002FD80 AF3_Correction_Limits:.float 0.5

no kidding!! ok so the addition to your filter in your original statement on how to find it should be

To do your Search for 3F000000BF000000 and then look for the next 4 hex values to be 4F22

I see you made a very long string.. if people are just making a quick look in their rom... this helped me find it for quite a few roms.

Makaveli · **Posted:** Sat Nov 05, 2016 9:00 am

pyro6314 wrote:

I'm still having issues with this, I zeroed the AF3 Correction Limits from -50%/50%, and monitored the 32bit base AF3 Correction in RomRaider. It didn't appear to have any effect and the correction hovers around -0.47. I am having the same issue as wrxt4cy (years ago now) where the Closed Loop Target has a clear switch between 14.7 --> ~13.7 . There must be something else at play here besides a correction which is causing this step change in the target. It doesn't appear to be a continuous Correction or Learning value but a definite switch over.

EDIT: I have no rear 02 and the relevant codes are turned off.

Same thing happening here. Targets 13.7 while cruising AZ1G900C 2011 ADM WRX. Is there other stuff that's not defined need to be changed?

Cheers

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

Makaveli wrote:

pyro6314 wrote:

I'm still having issues with this, I zeroed the AF3 Correction Limits from -50%/50%, and monitored the 32bit base AF3 Correction in RomRaider. It didn't appear to have any effect and the correction hovers around -0.47. I am having the same issue as wrxt4cy (years ago now) where the Closed Loop Target has a clear switch between 14.7 --> ~13.7 . There must be something else at play here besides a correction which is causing this step change in the target. It doesn't appear to be a continuous Correction or Learning value but a definite switch over.

EDIT: I have no rear 02 and the relevant codes are turned off.

Same thing happening here. Targets 13.7 while cruising AZ1G900C 2011 ADM WRX. Is there other stuff that's not defined need to be changed?

Cheers

I think your just missing the other AF 3 CL Target Compensation Limits. Its in another thread how to find it. yours is at 2e4a4

0 Those out and report back

AF 3 CL Target Compensation Limits = 2e4a4

Also check your CL Compensation tables. On the 08+ it freaks out if you 0 out that whole map BTW... so dont just go in there and 0 it...

Makaveli · **Posted:** Sat Nov 05, 2016 11:08 pm

Bamofo wrote:

I think your just missing the other AF 3 CL Target Compensation Limits. Its in another thread how to find it. yours is at 2e4a4

0 Those out and report back

AF 3 CL Target Compensation Limits = 2e4a4

Also check your CL Compensation tables. On the 08+ it freaks out if you 0 out that whole map BTW... so dont just go in there and 0 it...

Thank you

I'll just have to figure out how to add it.

I'm pretty sure its under this heading ALPHA AF 3 (Rear 02 Sensor)

Makaveli · **Posted:** Sat Nov 05, 2016 11:23 pm

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

RomRaider

AF#3 (Rear O2 sensor) correction limits

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