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Author Topic: How to run the 551K/Q RS4 software on a 551M S4 ECU  (Read 64844 times)
RS4boost
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« Reply #15 on: August 02, 2012, 10:50:23 AM »

Is there no VARDEF in M/H/T box etc?

What allows other boxes to have codings other than their respective VARDEF?

Also, is there a problem if its 10 rather than 6?

Do you think it will still pass US smog?

Perhaps 10 is ok?

551M VARDEF is 6611, but I don`t know why the 551M can be recoded and the 551K not.

There must be other stuff in the software that allow or deny recoding the ECU.

One differnet by coding is that EURO III cars have no evaporation test for the gas tank, how in the US.
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phila_dot
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« Reply #16 on: August 02, 2012, 11:02:48 AM »

551M VARDEF is 6611, but I don`t know why the 551M can be recoded and the 551K not.

There must be other stuff in the software that allow or deny recoding the ECU.

One differnet by coding is that EURO III cars have no evaporation test for the gas tank, how in the US.

Not to insult your intelligence, but did you try the recode with the engine running or engine off/on bench. The ECU will not accept the recode with a running engine. My assumption is that the recode isn't even necessary though.

You will not pass OBD emissions with unsupported readiness. Some states will allow one test, so the K box should be acceptable for some, but the Q box could cause problems with emissions testing.
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nyet
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« Reply #17 on: August 02, 2012, 11:19:23 AM »

You will not pass OBD emissions with unsupported readiness. Some states will allow one test, so the K box should be acceptable for some, but the Q box could cause problems with emissions testing.

Depending on the state, agreed. The irony is that in CA, the testing standards are so insanely crazy that a lot of test stations simply don't care about a lot of things they should, because if all test stations were 100% anal retentive, about 1% of used cars would actually pass. LOL @ CA.
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ME7.1 tuning guide
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Please do not ask me for tunes. I'm here to help people make their own.

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RS4boost
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« Reply #18 on: August 02, 2012, 12:19:18 PM »

Not to insult your intelligence, but did you try the recode with the engine running or engine off/on bench.

Of course in my car and NOT by a runing engine... Cheesy
I know how a ECU`s must be recoded.
Also tryed with a valid login. Wink

btw
I have posted new diagnostic and logging stuff here:

http://nefariousmotorsports.com/forum/index.php?topic=2349.0title=

 
« Last Edit: August 02, 2012, 12:22:25 PM by RS4boost » Logged

RS4boost
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« Reply #19 on: August 16, 2012, 10:52:03 AM »

Any news here?

Whats the actual status with jibberjive`s test?
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Snow Trooper
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« Reply #20 on: August 16, 2012, 11:00:15 AM »

I will have my car running again by next week and will definitely do some testing.
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RS4boost
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« Reply #21 on: August 16, 2012, 02:01:35 PM »

I will have my car running again by next week and will definitely do some testing.

Nice to hear thats going on.
Can`t wait to read some good news...
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audituned
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« Reply #22 on: August 16, 2012, 04:12:17 PM »

Hint: There are two coding tables within the ROM that list any and all valid codes that the ECU can accept. Altering this table will allow you to both change what a coding does, and what coding is allowed. The code table is often followed by a table that defines what flags get used for each softcode.
« Last Edit: August 16, 2012, 04:23:12 PM by newt » Logged
s5fourdoor
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« Reply #23 on: August 16, 2012, 07:32:14 PM »

Is the coding table located in the first 32k of the ROM?  Is this what Thomas has been saying all along?
Thomas:  My m-box car was originally an a-box.  I run code 06611 on my m-box tuned rom.  Is there any way you can modify the correct location in the first 32k to permit 06611?  If I am not understanding the structure here, is there a diagram which describes the relationship between the EEPROM, CPUROM, and 1024kb ECU-ROM?  Haven't you already verified that the EEPROM and CPUROM are identical?  This is why I'm confused by previous statements.  Does the EEPROM or CPUROM need to be modified for the flash to work?  It sounds like the answer is yes, but the guy above me thinks there's a table for permissible-codes....
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s-company
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« Reply #24 on: August 17, 2012, 01:17:59 AM »

concerning coding:
551K you can try 05711.


BR
« Last Edit: August 17, 2012, 01:27:21 AM by s-company » Logged
RS4boost
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« Reply #25 on: August 17, 2012, 04:31:53 AM »

Is the coding table located in the first 32k of the ROM?  Is this what Thomas has been saying all along?
Thomas:  My m-box car was originally an a-box.  I run code 06611 on my m-box tuned rom.  Is there any way you can modify the correct location in the first 32k to permit 06611?  If I am not understanding the structure here, is there a diagram which describes the relationship between the EEPROM, CPUROM, and 1024kb ECU-ROM?  Haven't you already verified that the EEPROM and CPUROM are identical?  This is why I'm confused by previous statements.  Does the EEPROM or CPUROM need to be modified for the flash to work?  It sounds like the answer is yes, but the guy above me thinks there's a table for permissible-codes....

The 32K CPUROM can`t be changed, modified or flashed. It is a fix binary on the CPU.
We have found that the 551K/Q CPUROM is equal to the 551M and most other newer VAG ME7.1.
So there is no need to make changes on the CPUROM.

I had said that the EEPROM structure is identical between both ECUs (VAG ME7.1), but parts of the content is ECU and car specific (WFS, login, coding, partnumber, VIN...).
The differents must be checked out and adjusted.
Coding is stored in the EEPROM and in the "VARDEF" value of the 1024k flash.
Both we can change, but we have no idea what happend when we do this.

I Believe, that we can flash the 551K/Q software over the 551M without problems.
If the different partnumbers will be checked by the internal OBD flash routine, it must be flashed in bootmode.
I believe also that we can use the original ECU coding of the 551K/Q, if we have successful flashed.

We don`t have answers to this case, so it must be tested...

@newt
Do you have more detailed informations for the coding tables?
« Last Edit: August 17, 2012, 04:36:38 AM by RS4boost » Logged

NOTORIOUS VR
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« Reply #26 on: August 17, 2012, 01:12:48 PM »

Interesting thread... may I ask why the shift to the Euro flash and moving away from the M-box flash?
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nyet
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« Reply #27 on: August 17, 2012, 01:20:42 PM »

16-bit load, k04 pid etc. etc.
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ME7.1 tuning guide
ECUx Plot
ME7Sum checksum
Trim heatmap tool

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 ex
NOTORIOUS VR
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« Reply #28 on: August 18, 2012, 06:40:49 AM »

You're right, I forgot about that...

Sorry I can't be of more help on this platform Sad
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SCHNELL ENGINEERING BLOG ·  STANDALONE ECUS · TUNING · DYNO · WIRING · PARTS · VEMS
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Snow Trooper
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« Reply #29 on: August 18, 2012, 10:19:40 AM »

What is the map limit?
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