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 Post subject: Re: AF#3 (Rear O2 sensor) correction limits
PostPosted: Sun Feb 05, 2017 4:01 am 
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Joined: Thu May 20, 2010 4:01 am
Posts: 3117
Location: Johannesburg, South Africa
Just download my 32bitbase from the Github repository and then fill in the addresseses in Ecuflash - the tables are already coded into the base:

https://raw.githubusercontent.com/TD-D/ ... ITBASE.xml

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 Post subject: Re: AF#3 (Rear O2 sensor) correction limits
PostPosted: Sat Feb 18, 2017 1:23 pm 
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Joined: Wed Dec 21, 2011 10:37 pm
Posts: 429
Thanks for all of the work Oren. I am going to eliminate my rear 02 sensor now as well. :D

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 Post subject: Re: AF#3 (Rear O2 sensor) correction limits
PostPosted: Sat Feb 18, 2017 1:57 pm 
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Joined: Wed Dec 21, 2011 10:37 pm
Posts: 429
Bamofo wrote:
04 STI A2ZJ710J

AF 3 Correction Limits = 28588

Tested and confirmed.


I searched the thread and did not see this information. I am attempting to get rid of my rear 02 once and for all without the fueling headaches from the past.

Any help you can provide would be greatly appreciated.

I did download merps most recent git hub updates but they were not included in that.

Thanks.

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 Post subject: Re: AF#3 (Rear O2 sensor) correction limits
PostPosted: Sat Feb 18, 2017 5:56 pm 
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Joined: Wed Dec 21, 2011 10:37 pm
Posts: 429
Since I have a sharp tune patch applied to my current map the latest sx file will not allow me to open it since it is not defined.

I downloaded the sharptunemaster zip file and am able to get it opened this far. Attached files and photos.

I lost my radiator fan switch table when I switched over to this metadata file.

Kind of lost on what to do next????

I have spent all day cutting and pasting into the definition files with no luck at all. :( The missing tables do not show up.

Forgive my lack of IT skills.


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2005 BAJA with a complete 2005 STI conversion ADF lifted 6" tube framed sitting on mattracks.


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 Post subject: Re: AF#3 (Rear O2 sensor) correction limits
PostPosted: Sat Feb 18, 2017 8:55 pm 
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Joined: Wed Dec 21, 2011 10:37 pm
Posts: 429
Well I spent the majority of the day cutting and pasting and taught myself a few things. Got these to finally show up.

Gonna try it out and disconnect the rear 02 sensor.

Fingers crossed!

EDITED: Confirmed it works!!!!!! Finally!


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 Post subject: Re: AF#3 (Rear O2 sensor) correction limits
PostPosted: Sun Feb 19, 2017 8:51 am 
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Joined: Thu May 20, 2010 4:01 am
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Location: Johannesburg, South Africa
Great stuff Sean, glad you came right.

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 Post subject: Re: AF#3 (Rear O2 sensor) correction limits
PostPosted: Sun Feb 19, 2017 2:56 pm 
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Joined: Wed Dec 21, 2011 10:37 pm
Posts: 429
Just a heads up to anyone doing this there are a total of 5 CELS to delete that I have found so far. The first two start at P0037 and the last 3 start at P0137. There may be more but I have not thrown any other codes yet.

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 Post subject: Re: AF#3 (Rear O2 sensor) correction limits
PostPosted: Thu Mar 30, 2017 3:00 pm 
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Joined: Wed Mar 29, 2017 5:07 pm
Posts: 1
Can anyone confirm the address for an 05 LGT Rom A2WC521C?

Much appreciated! Thanks!


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 Post subject: Re: AF#3 (Rear O2 sensor) correction limits
PostPosted: Sun May 14, 2017 4:01 am 
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Joined: Sat Dec 12, 2015 12:55 am
Posts: 23
Disabled my rear O2 limits. Would like to add uego wideband logging function. Confirmed a good signal from my uego but when I connect it to the rear O2 white wire that goes to the ecu and then try to log the voltage in RR I get no voltage. Should be around 2.4V. Thoughts?

Edit* turns out the wire colors change at the plug from sensor to the ecu. I didn't notice this. The blue wire is the one to tap into that goes to the sensor which turns into a white wire at the other end going to the ecu. Hope this helps someone else.


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 Post subject: Re: AF#3 (Rear O2 sensor) correction limits
PostPosted: Thu May 25, 2017 11:39 am 
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Newbie

Joined: Fri Feb 27, 2009 5:37 am
Posts: 1
Hi

Could someone please identify these tables for JDM Forester STI, A2WC011E ?

CAL ID: Unknown ECU ID: 3B02594216

Thanks


Last edited by didzinators on Fri Jun 02, 2017 9:36 am, edited 1 time in total.

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 Post subject: Re: AF#3 (Rear O2 sensor) correction limits
PostPosted: Wed May 31, 2017 2:38 pm 
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Joined: Fri Dec 06, 2013 5:15 pm
Posts: 1
I found that A8DK100P had been confirmed for rear O2 and was excited since I have the US version A8DK100I. I did the search for those limits in my Rom. Came up empty. Can anyone shed some light on why these similar ecus can have this difference?


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 Post subject: Re: AF#3 (Rear O2 sensor) correction limits
PostPosted: Fri Jun 09, 2017 7:32 pm 
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RomRaider Donator

Joined: Sun Jan 03, 2016 10:05 am
Posts: 217
I have a unique 2005 U5 2.5 with 5 O2 sensors (ECU ID 2F220a4706 and internal ID E2ZK003a). 2 AFR, 2 O2 behind each header cat and 1 O2 behind a combined cat. Does anyone know if I can tell if fueling is affected by all 3 of the rear ones?

Better question - can / should I turn off or scale out the last 3 O2 sensors? :lol:


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 Post subject: Re: AF#3 (Rear O2 sensor) correction limits
PostPosted: Wed Jun 14, 2017 8:18 am 
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Joined: Sun Jan 03, 2016 10:05 am
Posts: 217
Perscitus wrote:
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?


Does the EZ36D also (like my 05 2.5i U5) have 5 O2 sensors - or 4?


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 Post subject: Re: AF#3 (Rear O2 sensor) correction limits
PostPosted: Wed Jun 14, 2017 4:57 pm 
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Joined: Sun Jan 03, 2016 10:05 am
Posts: 217
Bamofo wrote:
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.


I am trying to do as suggested here. I find 4 instances of 3F000000BF000000 but nothing immediately followed by 4F22. What am I doing wrong?

The values I find are 21C60 (I do see 4F22 here but not immediately following), 20644, 20114, 1E148 but unsure what is what from there.

Any way to tell what these different -0.5 and +0.5 values belong to?

Note, this car has 5 o2 sensors (2 front AFR, 2 mid post each header cat and 1 rear post combined exhaust cat) so I'd love to ignore all rear 3 if they all do fuel corrections. I assume that at least the mid 2 o2 sensors do, not sure about the rear most one. It is possible only (#1, #2 of course) #3 and #4 do corrections.

So I'm assuming 1 of them is AFR #3 correction and 1 is AFR #4 correction ???


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 Post subject: Re: AF#3 (Rear O2 sensor) correction limits
PostPosted: Mon Jun 26, 2017 6:05 pm 
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Joined: Sun Jan 03, 2016 10:05 am
Posts: 217
05Pzev wrote:
Bamofo wrote:
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.


I am trying to do as suggested here. I find 4 instances of 3F000000BF000000 but nothing immediately followed by 4F22. What am I doing wrong?

The values I find are 21C60 (I do see 4F22 here but not immediately following), 20644, 20114, 1E148 but unsure what is what from there.

Any way to tell what these different -0.5 and +0.5 values belong to?

Note, this car has 5 o2 sensors (2 front AFR, 2 mid post each header cat and 1 rear post combined exhaust cat) so I'd love to ignore all rear 3 if they all do fuel corrections. I assume that at least the mid 2 o2 sensors do, not sure about the rear most one. It is possible only (#1, #2 of course) #3 and #4 do corrections.

So I'm assuming 1 of them is AFR #3 correction and 1 is AFR #4 correction ???


So... on my ECU (2F220A4706) I decided to do some testing. I disabled each one of the results 1 by 1. I only went until I found what I thought I was looking for:

20644 seems to disable A/F learning #3 - now reading 0 (#4 was already reading 0).
20114 seems to disable A/F correction #3 and #4.

What I did was zero out the 3F000000bF000000's one at a time and then monitored after each. After 20644 I noticed A/F learning #3 went to 0, A/F correction #3 and #4 stayed up. I left 20644 zero'd and moved on. After 0'ing 20114 correction #3 and #4 went to 0, so I stopped there sicen both learning and correction at 0.

I couldn't figure out what 21C60 did nor 1E148 (although I wonder if I had been monitoring AF1 and AF2 if that would have been obvious.....).

I'm assuming that I've accomplished what I wanted here - to ignore whatever the rear O2's have to say as it pertains to fuel trims, but can someone explain to me what the difference is between what I've just done and the other thread which discusses "Rear O2 closed loop target limits"? Is there still some impact my rear O2's could have? I don't need to remove the sensor itself, just don't want it altering fueling.

Should I still be looking to disable additional corrections and if so, how can I monitor/test those?

And finally... again, I have a 5th O2 sensor on this thing... no idea if this one actually does anything (fuel trim?) other than monitor the rear most Cat...

There is also 1 instance of BF0000003F000000 in my rom...


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