Custom tune ?

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markhodges78

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	Custom tune ? « on: January 19, 2022, 02:05:59 PM »

So I bought a used ecu off of ebay to replace the one In my car that was no longer communicating with car or flasher ( lol I mess up some how ) did a full backup with ktag and also read the eeprom with me7_95040.exe and the flash with nefmoto... afterwards I did a full restore with ktag using my original ecu backup and also wrote the eeprom with my original eeprom file using me7_95040.exe later after looking at the eeprom bin that came from the ebay ecu with eeprom tool I noticed that the ecu had a tuner tag that looked like this.
Tuner Tag: ←Cx |
Does this mean the ebay ecu had a custom tune? and if so can I write it back to the ecu?

Thanks Mark


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nyet

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	Re: Custom tune ? « Reply #1 on: January 19, 2022, 05:17:12 PM »

if it has a riser no.

if it has any sort of other prot, no, not with nef flasher.

if it has no riser, you can use bootmode if flash fails.


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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

bamofo

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	Re: Custom tune ? « Reply #2 on: January 20, 2022, 06:24:05 AM »

Quote from: markhodges78 on January 19, 2022, 02:05:59 PM

Before you go chasing waterfalls. Can you please post info about your car? Year / Make / Model. ECU ID and so on? Its hard to say you read the EEPROM right and rom if you dont share what ECU your working with...

Let us know and you might get better answers. If you share the EEPROM and ROM we can also look quick to see what happened.


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markhodges78

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	Re: Custom tune ? « Reply #3 on: January 20, 2022, 06:58:49 AM »

Quote from: bamofo on January 20, 2022, 06:24:05 AM

Sure I’m sorry.

2003 Audi A6
Ecu 4Z7907551R
Ecu is an ME7.1.1 0003
Flash 29F800BB-55SE0
EEPROM 5P08C3

I will add flash and eeprom files when I return to my computer

Thanks mark


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markhodges78

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	Re: Custom tune ? « Reply #4 on: January 20, 2022, 08:12:26 PM »

Here are the files the ones that do not say ebay or from my original ecu these ecu's were read with ktag and the eeproms that dont show all FFFFFF were read with me7_95040.exe also notice the tuner tag in file ebay.bin


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markhodges78

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	Re: Custom tune ? « Reply #5 on: January 24, 2022, 06:49:33 AM »

Has anyone had a chance to look at the files I've posted...


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nyet

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	Re: Custom tune ? « Reply #6 on: January 24, 2022, 05:44:39 PM »

Why bother? There isn't anything of interest.

If you are looking for a tune, start from a stock file, not a tuned file.


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markhodges78

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	Re: Custom tune ? « Reply #7 on: January 24, 2022, 07:45:22 PM »

Thanks I just wanted to know if the ecu I got from ebay had anything on it worth holding onto...

Thanks Mark


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nyet

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	Re: Custom tune ? « Reply #8 on: January 24, 2022, 08:39:02 PM »

Quote from: markhodges78 on January 24, 2022, 07:45:22 PM

Thanks I just wanted to know if the ecu I got from ebay had anything on it worth holding onto...

Extremely doubtful at this point. Pretty much everything out there is garbage, you can do better with a bit of time and DIY given modern understanding of ME7.1


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360trev

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	Re: Custom tune ? « Reply #9 on: January 28, 2022, 01:09:09 PM »

-romfile "f:\Downloads2\ebay original.FLS" -romfile2 F:\Downloads2\new.FLS -bd

Succeded loading romfile #1 (0x100000 bytes).
SHA-256 of romfile #1: E968EA02CCC509446CEF1B6CAE9ADB0572A5D65049626583B68066BC662CA63D
--
Loaded Primary ROM in 1Mb Mode
Succeded loading romfile #2.

SHA-256 of romfile #2: E968EA02CCC509446CEF1B6CAE9ADB0572A5D65049626583B68066BC662CA63D
Loaded Secondary ROM in 1Mb Mode

Showing binary difference report...

Files are identical.

Code:

SSECUHN      : 0261208288               : systemSupplierECUHardwareNumber
SSECUSN      : 1037368391               : systemSupplierECUSoftwareNumber
DIF          : 4Z7907551S               : ..
BRIF         : 0020                     : ..
OTHERID      : 2.7L V6/5VT              : ..

EPK:  /1/ME7.1.1/5/6030.03//25A/Dst48o/030603/


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nyet

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	Re: Custom tune ? « Reply #10 on: January 28, 2022, 06:09:43 PM »

dare i suggest md5sum?


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360trev

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	Re: Custom tune ? « Reply #11 on: January 30, 2022, 05:43:08 AM »

@nyet...

Yes ofcourse except this is part of my "differential analysis" which actually shows you much more than if its different, actually which calibration tables are different between a tuned and a stock rom file and even possible to show by how much they've differ from the base map...


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