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td-d
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Post subject: Re: AF#3 (Rear O2 sensor) correction limits Posted: Mon Feb 17, 2014 3:26 pm |
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| Moderator |
Joined: Thu May 20, 2010 4:01 am Posts: 3117 Location: Johannesburg, South Africa
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covertrussian wrote: Upgraded the car to A2ZJ512I and zeroed out the above, still saw AF#3 move from 0.0 to -1.x. With everything zeroed out AF#3 32bit should stay at 0 always correct? Yup, it should - I'll keep looking. Did it make any difference to AF3 none the less?
_________________ He who dies with the most gadgets wins.
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covertrussian
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Post subject: Re: AF#3 (Rear O2 sensor) correction limits Posted: Mon Feb 17, 2014 5:49 pm |
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| RomRaider Donator |
Joined: Tue Jan 28, 2014 10:48 am Posts: 120
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I can still see AF3 Correction move around, tempted to zero out all of the 5, -5 locations...
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scootarida1
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Post subject: Re: AF#3 (Rear O2 sensor) correction limits Posted: Mon Feb 17, 2014 9:04 pm |
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Joined: Fri Oct 26, 2012 2:33 pm Posts: 25
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Mine is doing the same thing. AF3 does not stay at 0 with tables 0'ed out. AF3 is zeroed and so are the rear o2 comps. Code: Time (msec) A/F Correction #1 (%) A/F Correction #3 (32-bit ECU) (%) CL/OL Fueling* (status) A/F Sensor #1 (AFR) 0 4.69 -0.47 8 14.24 25 4.69 -0.47 8 14.36 49 4.69 -0.47 8 14.36 74 4.69 -0.47 8 14.36 98 4.69 -0.47 8 14.36
This is just a segment. It usually is between 0 and -1.5ish.
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td-d
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Post subject: Re: AF#3 (Rear O2 sensor) correction limits Posted: Tue Feb 18, 2014 3:05 am |
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| Moderator |
Joined: Thu May 20, 2010 4:01 am Posts: 3117 Location: Johannesburg, South Africa
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covertrussian wrote: I can still see AF3 Correction move around, tempted to zero out all of the 5, -5 locations... Careful - some of them relate to AF#1 learning and correction, which you'll land up switching off.
_________________ He who dies with the most gadgets wins.
Please do not PM me - use the email option.
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covertrussian
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Post subject: Re: AF#3 (Rear O2 sensor) correction limits Posted: Tue Feb 18, 2014 11:01 am |
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| RomRaider Donator |
Joined: Tue Jan 28, 2014 10:48 am Posts: 120
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td-d wrote: covertrussian wrote: I can still see AF3 Correction move around, tempted to zero out all of the 5, -5 locations... Careful - some of them relate to AF#1 learning and correction, which you'll land up switching off. One thing I noticed is, correction limits are displayed as 50, -50 while target limits are .5, -.5. Is that simply because of your ECUFlash def file formatting, or am I actually modifying the wrong data 
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covertrussian
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Post subject: Re: AF#3 (Rear O2 sensor) correction limits Posted: Thu Feb 20, 2014 11:58 pm |
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| RomRaider Donator |
Joined: Tue Jan 28, 2014 10:48 am Posts: 120
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Did some testing today on A2WC522N. Found that correction and compensation limits on different float ranges.
AF3 Correction Limits: 2DF2C (Hex value: 3F000000BF000000, Dec value: 0.5,-0.5) AF3 Compensation Limits: 2C91C (Hex value BF0000003F000000, Dec value: -0.5,0.5)
Zeroing out those did the trick, my AF #3 correction was steady at 0. What's weird is, AF #1 correction was staying at 0 for about a mile, then started moving around (edit this is normal after reflash). It's harder to test the target compensation zeroing, thus I'm not 100% certain on those values, but td-d found them in the other thread.
Last edited by covertrussian on Thu Feb 01, 2018 10:27 am, edited 1 time in total.
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scootarida1
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Post subject: Re: AF#3 (Rear O2 sensor) correction limits Posted: Fri Feb 21, 2014 10:06 am |
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Joined: Fri Oct 26, 2012 2:33 pm Posts: 25
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covertrussian wrote: Did some testing today on A2WC522N. Found that correction and compensation limits on different float ranges.
Correction location: 2DF2C, 2DF30 (Hex value: 3F000000BF000000, Dec value: 0.5,-0.5) Compensation Location: 2C91C, 2C920 (Hex value BF0000003F000000, Dec value: -0.5,0.5)
Zeroing out 2DF2C, 2DF30 did the trick, my AF #3 correction was steady at 0. What's weird is, AF #1 correction was staying at 0 for about a mile, then started moving around. It's harder to test the target compensation zeroing, thus I'm not 100% certain on those values, but td-d found them in the other thread. So on the correction locations, were you still seeing the 0.5,-0.5 values? I am seeing this aswell and wondering if mayne I am running into the same problem. It seems like you have zeroed out two correction locations?
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covertrussian
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Post subject: Re: AF#3 (Rear O2 sensor) correction limits Posted: Fri Feb 21, 2014 10:32 am |
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| RomRaider Donator |
Joined: Tue Jan 28, 2014 10:48 am Posts: 120
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scootarida1 wrote: So on the correction locations, were you still seeing the 0.5,-0.5 values? I am seeing this aswell and wondering if mayne I am running into the same problem. It seems like you have zeroed out two correction locations? On correction yes, it really seems to vary based on ECU though. That's what makes this so hard! The locations I posted are individual cells that are side by side, You zero out two locations with td-d ecuflash example. I wanted to provide each cell's unique location. When you setup a Table as per td-d's example, you will provide the first location only, then the software makes a table and expands to more cell's as defined.
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kaleonearth
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Post subject: Re: AF#3 (Rear O2 sensor) correction limits Posted: Sat Feb 22, 2014 5:09 pm |
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Joined: Mon Jan 28, 2013 12:09 pm Posts: 29
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covertrussian
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Post subject: Re: AF#3 (Rear O2 sensor) correction limits Posted: Sun Feb 23, 2014 9:43 pm |
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| RomRaider Donator |
Joined: Tue Jan 28, 2014 10:48 am Posts: 120
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Can't seem to disable corrections for A2ZJ512I, I've tried zeroing out all of 3F000000BF000000's and BF0000003F000000's and still see it moving around. Maybe having the rear O2 unplugged is the issue, will try to unplug the rear O2 on the Legacy (A2WC522N) and see if it moves around.
Also got around to highway testing the zeroed out corrections on A2WC522N's, did an 80 mile trip @65*F (might be a little short), but got 31mpg actual (miles driven / gallons filled up) not calculated. The car is pretty much stock, Invidia up pipe & Sidegapped plugs, and maybe an exhaust leak that I caused during up pipe install (hence zeroing out corrections helped improve MPG).
I have another long trip ahead of me ~250miles, will see what I get then.
Edit: Well second trip was less then stellar, back to ~25-27 range it was colder (30*F) thus the first trips increase was from warmer ambient temps.
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Bamofo
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Post subject: Re: AF#3 (Rear O2 sensor) correction limits Posted: Fri Mar 14, 2014 10:37 am |
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| Experienced |
Joined: Mon Jul 02, 2007 7:46 am Posts: 430
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pyro6314 wrote: I am after the location of the AF3 Correction and Compensation Limits for my 06 USDM STI Rom (A2ZJE11J).
EDIT: Found only one occurrence of 3F 00 00 00 BF 00 00 00 at 2B154 assumed to be the AF3 correction limits. Will verify the effect of zeroing once my 257 swap is wired in. That looks right. There were other mentions of the hex pattern but they werent correct!
_________________ --2008 3.6 Tribeca -- --2007 STI limited Panda-- --Twinscroll GT40R 2.35L--
Last edited by Bamofo on Sun Mar 16, 2014 10:26 am, edited 1 time in total.
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norbs
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Post subject: Re: AF#3 (Rear O2 sensor) correction limits Posted: Fri Mar 14, 2014 5:17 pm |
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Joined: Sat Feb 03, 2007 7:38 pm Posts: 75
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Can I get defs. for
A2WD002T A2WD010T
Cheers.
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norbs
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Post subject: Re: AF#3 (Rear O2 sensor) correction limits Posted: Mon Mar 24, 2014 4:04 am |
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Joined: Sat Feb 03, 2007 7:38 pm Posts: 75
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norbs wrote: Can I get defs. for
A2WD002T A2WD010T
Cheers. Any chance for the above defs?
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norbs
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Post subject: Re: AF#3 (Rear O2 sensor) correction limits Posted: Tue Apr 08, 2014 8:28 am |
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Joined: Sat Feb 03, 2007 7:38 pm Posts: 75
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norbs wrote: Can I get defs. for
A2WD002T A2WD010T
Cheers. Can someone please provide defs for above. Please 
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td-d
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Post subject: Re: AF#3 (Rear O2 sensor) correction limits Posted: Tue Apr 08, 2014 9:31 am |
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Joined: Thu May 20, 2010 4:01 am Posts: 3117 Location: Johannesburg, South Africa
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Rear o2 comps for A2WD002T is at 2972C
Looks like the older STIs (pre 2007) have only the adders to AF3 correction, not the limits.
_________________ He who dies with the most gadgets wins.
Please do not PM me - use the email option.
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