{QUESTION} rückgerüstetes chiptuning nachweisbar?

I have a question that has been bothering me for a long time, addressed to all chip tuning experts:

Can Seat, or generally? VAG, an early chip tuning, whether via OBD or box, even after subsequent reversion to original settings, can still be detected and proven in the control unit?

Are the results of the parameters changed by the chip tuning stored somewhere permanently, for example, the maximum injection times or boost pressure?

Maybe someone here has some expertise in this area. Thank you for your help.

Best regards, Thomas.

Only if any structural changes have been made. For example, if another chip was soldered into the control unit, or cables were cut for a 10ct tuning, or if the seal on the control unit was broken.

You probably already know this.
In many cars, IC sockets are actually soldered in.
Of course, one can see this when the control unit is opened.

Maxx

Some OBD tools (e.g., the whole KWP2000 / Clone story) leave behind a signature.
within the boot block of the chip. One can also find them when retrofitting to the original.

Hi Rudi

Therefore, a replacement control unit, as some tuners also offer, would be the only truly safe option

Yes and no.
With a good approximation, one can at least demonstrate that it is not the original STG.
(The reason for the exchange is explained on another sheet).

Good OBD programming devices (e.g., Byteshooter) leave no signatures.
But you'll definitely only find them with professional tuners and their resellers.

Hi Rudi

Okay, regarding your questions, specifically whether the ECU has been re-tuned or additional devices have been installed, can VW detect if it has been tampered with? There are certain data blocks that cannot be displayed by tools like VAG-COM, but only by devices used for quality assurance. These blocks contain data that indicate a change, such as excessive torque, exceeding volume limits, exceeding load pressure, changes in smoke detection, etc. Therefore, in simple terms, VW can detect if the ECU has been modified. I advise against this, especially if the vehicle is still under warranty.

Best regards,

"Just out of curiosity, where did this information come from? 1st hand? 2nd hand? 3rd?" Hand?

I can assure you with complete certainty that this information is 100% accurate.
many greetings

tdi pumpe düse wrote:

I can assure you with complete certainty that this information is 100% accurate.

I don't mean to misunderstand you, but this contradicts everything I've read and seen before – and I'm not the only one who feels this way. Would it be possible for you to get us the corresponding image, since you seem to know exactly what we need?

I can assure you with complete certainty that this information is 100% accurate.

I would agree with 'can correspond to'. These values should be exactly like this
consistent / applied uniformly, like kilometer or operating hour counters

Hi Rudi

Guys, please be patient. I can't share this information here, you need to understand that. I can only tell you this because I deal with these kinds of things every day and handle such cases.

Ok, so remains it an unconfirmed statement.

Hello.

Are there any new findings on this topic?

( I haven't been active since the last entry in 2006)

Greetings,

Hello,

Regarding old cucumbers, it's already irrelevant and, in some cases, not detectable. However, for EDC16 and newer versions, as well as MED9, it is definitely detectable.

Best regards, Rainer

No one should expect someone to disclose their confidential professional information here, risking their job and making themselves vulnerable.
It is plausible (warranty processing without the possibility of circumventing it) and, for me, credible.
I know about a VW tuner that can also be "reprogrammed" - "Warning: performance increased."