[Venigo^]

i dont doubt what you are saying. i have been successful in restoring original DME D-Flash, P-Flash and EEPROM to get rid of S0777.

what i would like to do is leave the Tune in and do not trigger S0777

not working. S0777 is generated newly on each start when car isnt stock

Interesting. So the check trigger should be manipulated/bypassed or blocked somehow. This is I guess not in the flash data but in the full data.

[____ANGEL___]

No, incorrect data set error and s0777 error are two different things, incorrect data set it's not related to a tune, but to an incorrect coding not aligned with software in ecu, like different power class in eeprom and flash and so on. Incorrect data set error does not trigger the tune detection. s0777 it's not an ecu dtc.

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Only possibility to cheat ISTA Auto Detection is to edit eeprom - when you have Stock Software on car and Eeprom is edited, S0777 is gone

true, but edit eeprom like what? leaving hours and liters etc as is and deleting only the datas that triggers the error, so the question is: what datas trigger the error?

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The tuning detection function is stored directly in the ECU.  The ecu Edc17c50 checks the data set for correctness.

If it is recognized as incorrect 27ab00 is set as dtc in the info memory.

Once this error has been set, it is saved in the eep and can no longer be deleted.

Therefore, always delete the corresponding error with every tuning.

In the case of edc17c50

Error class 27AB00 DFC_SIA_CycSigChk_Data >0
Error class 27AC00 DFC_SIA_CycSigChk_Prog >0

Shutdown Mask 27AB00 DFC_SIA_CycSigChk_Data >255 255
Shutdown mask 27AC00 DFC_SIA_CycSigChk_Prog >255 255

In my tunings, when I create some, these errors are always deleted and when the ecu is flashed back to the original. Is no s0777 set afterwards.

I don't think this... Maybe can i remotely scan with my newer ista one of your tuned car checking also live datas like rail pressure etc so i can be sure that is tuned?

[Venigo^]

Hmm. But when it scans live data, if it scans. Then it checks they values with 'standard' / 'normal' values. Or some preset table/mapping with some marge psi/bar or something. It should be somehow possible to edit these mapping then, if it can be detected.

[____ANGEL___]

not so easy, tuning detection evaluate also other ecus not only engine one, it not works as vw prescrictive constructive detection.

[NeRkO20]

I´ve flashed today F30 with esys. Car in sleepmode...laptop off, icom disconnected....5x read out and evry time before reading gone to sleepmode and disconnected in ista and icom...no more s0777
I cannot belive that it worked this way

[GuMMiBaEr]

I´ve flashed today F30 with esys. Car in sleepmode...laptop off, icom disconnected....5x read out and evry time before reading gone to sleepmode and disconnected in ista and icom...no more s0777
I cannot belive that it worked this way

Hey.
Could you explain, what did you exactly done to the car?
Modifiying istep? Just flashing ecu?
What ista version did you use?

Thanks

[NeRkO20]

I flashed DME with esys and Data version 4.37.4x...so nothing special

[Node]

I flashed DME with esys and Data version 4.37.4x...so nothing special

So you removed tune. Why then be surprised tuning no longer detected?

[masa52]

tuning even after back to factory will be detected

[hashtagmaster]

I flashed DME with esys and Data version 4.37.4x...so nothing special

So you removed tune. Why then be surprised tuning no longer detected?

I thought so too, why is he happy?

He did an update of the DME so the TUNING is gone too