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Author Topic: Dialing in the single  (Read 126113 times)
marcellus
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« Reply #180 on: November 07, 2012, 10:11:35 PM »

Thank you so much!  I will give it a try first thing in the morning on my way to work. 
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« Reply #181 on: November 07, 2012, 11:58:01 PM »

I changed the file you provided to operate both banks primary O2 sensor readings from the sensor connected to bank one.

I had to change three references to uusvk2_w. 

==============================================================================
me7check v1.11 (c) mki, 06/2004-07/2011
Checking file marcellus_single_b1.bin (size=1048576)
Reading Version Strings...
-> Bootrom Version = embedded in CPU, asume 05.12/05.32
-> EPK = 40/1/ME7.1/5/6005.01//22m/DstC2o/011200//
-> Contents of ECUID data table:
   - '0261207143'         (SSECUHN)
   - '1037360857'         (SSECUSN)
   - '8D0907551M  '       (VAG part number)
   - '0002'               (VAG sw number)
   - '2.7l V6/5VT     '   (engine id)
-> Contents of ECUID data table:
   - 'HW_MAN004'

-> No errors found. File is OK.   *********************

new approach and i hope it works, but i thought we covered this and its due to stereo lambda trying to have the two banks slightly diff?  like the same as two sensors in one down pipe, it expects to see different values and when it doesnt it gets pissed off.
« Last Edit: November 08, 2012, 03:29:24 PM by Snow Trooper » Logged
phila_dot
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« Reply #182 on: November 08, 2012, 07:08:55 AM »

new approach and i hope it work, but i thought we covered this and its due to stereo lambda trying to have the two banks slightly diff?  like the same as two sensors in one down pipe, it expects to see different values and when it does it gets pissed off.

I do vaguely remember this being mentioned, but I haven't seen anywhere in the FR or code that this would cause an issue. Granted, I haven't looked very hard either. Logically, I don't see any reason for a that to cause an issue either.

Front and rear sensors are evaluated against each other for catalyst checking and response time, but not B1 vs B2 AFAIK.
« Last Edit: November 08, 2012, 07:11:50 AM by phila_dot » Logged
marcellus
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« Reply #183 on: November 08, 2012, 08:35:52 AM »

Thank you!  Major + for you!

From what I have seen so far the tweaks worked.  I was only able to watch VCDS for a while when driving.  The lambda values did hover around from each other slightly, but overall stayed pretty close to each other.  That was just a short drive to work.

I still had the LC-1 going to bank two.  I wasnt sure if I was supposed to pull it, or if it mattered.  After I got to work I pulled the plug for sensor 2 and let the car idle for 10 minutes.  Usually during a long idle like this the trims will go crazy and car would misfiring bad.  This time the trims stayed close to each other and idle stayed rock solid.  That is a very good sign.  Hell, after about two minutes.....idling at a stop light, I can feel the trims going their seperate ways.  

I am excited to see what happens on a lengthy drive.  If its anything like I am hoping, I finally will be able to plug back in the evap solenoid and dial in my LTFT.  

« Last Edit: November 08, 2012, 10:20:00 AM by marcellus » Logged
phila_dot
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« Reply #184 on: November 08, 2012, 09:17:38 AM »

Thank you!  Major + for you!

From what I have seen so far the tweaks worked.  I was only able to watch VCDS for a while when driving.  The lambda values did hover around from each other slightly, but overall stayed pretty close to each other.  That was just a short drive to work.

I still had the LC-1 going to bank two.  I wasnt sure if I was supposed to pull it, or if it mattered.  After I got to work I pulled the snesor and let the car idle for 10 minutes.  Usually during a long idle like this the trims will go crazy and car would be misfiring so bad.  This time the trims stayed close to each other and idle stayed rock solid.  That is a very good sign.  Hell, after about two minutes.....idling at a stop light, I can feel the trims going their seperate ways.  

I am excited to see what happens on a lengthy drive.  If its anything like I am hoping, I finally will be able to plug back in the evap solenoid and dial in my LTFT.  



Sounds good. Keep us updated.

Bank two should be completely ignored now for all purposes except maybe power stage diagnosis (O2 sensor heater circuit).
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« Reply #185 on: November 08, 2012, 10:06:56 AM »

Nice, I will give it a shot soon and report back.
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« Reply #186 on: November 08, 2012, 03:59:45 PM »

Philla... how the heck did you even find those variables, i cant even find reference to them in the FR, cant find them in any definition for any box ever, good work!

can you give locations for all three so I can test it on mine?
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phila_dot
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« Reply #187 on: November 08, 2012, 05:16:38 PM »

Philla... how the heck did you even find those variables, i cant even find reference to them in the FR, cant find them in any definition for any box ever, good work!

can you give locations for all three so I can test it on mine?

Define these as 16 bit (do not designate LoHi or LSB), output type will be Hex digits.

To delete B1:
0x3C8BE
0x3C8D0
0x3E832

Original value will be 1A91, to replace with B2 input change to 1891.

To delete B2:
0x3C8F0
0x3C902
0x3EA90

Original value will be 1891, to replace with B1 input change to 1A91.

I can explain more later if you would like, but no time now.
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« Reply #188 on: November 08, 2012, 05:28:26 PM »

i think i have my head wrapped around it
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nyet
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« Reply #189 on: November 08, 2012, 06:21:14 PM »

Thanks. Added to wiki. You guys rock.
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ME7.1 tuning guide (READ FIRST)
ECUx Plot
ME7Sum checksum checker/corrrector for ME7.x

Please do not ask me for tunes. I'm here to help people make their own.

Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience.
marcellus
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« Reply #190 on: November 08, 2012, 06:32:59 PM »

After a bit more idling and driving it seems as if it is a lot closer than before, but the trims are still doing their own thing.  Definately not as bad as before.  I watched the voltages on the two banks via VCDS and with only one sensor input being used, both sensors are showing the exact same reading all the time.  Something is still making them trim different.

Maybe I have the wrong idea of what should happen.  In my head I pictured them being pretty much batch fire and not so much sequential.  Thats the best way I can put it.  The reading from the one sensor would translate into one trim across the board.  

I do realize I need to adjust my fueling now that things are a lot more consistent.  Maybe once I get that aspect better, the trims will settle in, and worrying about them being exactly the same will be a non issue.

Any other areas I should look?  

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phila_dot
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« Reply #191 on: November 08, 2012, 06:51:13 PM »

This may not apply because I think I remember you saying you disabled LTFT's, but have you reset trims?
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marcellus
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« Reply #192 on: November 08, 2012, 08:08:04 PM »

I disabled LTFT by unplugging evap.  You think I should plug it back in and let the LTFT do its thing?  

I reset the ecu a few times just to be sure.  
« Last Edit: November 08, 2012, 08:55:15 PM by marcellus » Logged
phila_dot
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« Reply #193 on: November 08, 2012, 08:56:11 PM »

I disabled LTFT plug unplugging evap.  You think I should plug it back in and let the LTFT do its thing?  

I reset the ecu a few times just to be sure.  

Yes.

What is the situation with your post cat O2's?

Are you using ME7L?
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marcellus
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« Reply #194 on: November 08, 2012, 10:32:25 PM »

The post cat o2's I believe are deleted.  I dont them plugged in and have switched the codes for them to be off.  I also changed CWONKLS to 17, which I understand to be just the front o2s turned on. 

I am not using ME7L yet.  Every time I get around to setting it up, there is some other issue that makes it not work on my car.  I havent figured them all out yet.
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