OBD tuning for the Ibiza ASZ

Hello,

Here's some recent news about OBD tuning:



Initially, without any further comments from my side, as the questions regarding operating permits, etc., have already been addressed.

What I would be interested in from a technical perspective:
Doesn't that fall under the category of "everything could be ruined again during the next inspection" - if the workshop installs some kind of software update in the engine control unit http://www.ibiza-forum.de/forum/thread.php?threadid=9408&sid=?

Hi Ulf,

Can you beam the essential text here?
'This way, it's not necessary to register specifically on the Ibiza forum.'
to be able to read the posts. Is there another trick to it?

Regards,

Sepp.

Hi,

The main text is quite lengthy, but essentially, there's a forum member who offers OBD tuning for €199, which, for example with the ASZ engine, can lead to up to a 30% increase in power. "Some people have already tested it in the forum, and according to Ulf's calculation tool, they are getting over 170 horsepower with the ASZ engine (originally 130)."

It's supposed to work on most PD models, and allegedly also on VE models produced after 2000, but the person who inquired about it specifically for an ALH model was told that it doesn't work on that model. I would like to point out that all 4 cylinders are not firing.

The catch of the story, and therefore also the knockout. The criterion is that the item doesn't have approval because the cost of the inspection is too high for the person (and, in my opinion, it's also questionable whether he would even get the approval regarding emissions, even though it's supposedly not smoky).

Best regards,

Jan.

Hello,

Thank you for the translation. As I understand it, this generally works starting with a specific generation of engine control units, or, in other words, a specific type of (E)PROM. It's a brilliant thing to be able to modify or replace the maps without opening the engine control unit. The developers at VW/Audi even do this with the 1551 tester. For the rest of the world, it can also be done with something like the Flashbooster. However, there's a catch: you should be familiar with editing maps – knowing what each parameter represents and how it affects the system. Also, the system itself costs around €5000, which is not a small amount. The page is definitely interesting for browsing.

Regards,

Sepp.

Sepp wrote:

Can you beam the essential text here? "This way, it's not necessary to register specifically on the Ibiza forum." to be able to read the posts. Or is there another trick to it?

Hi Sepp,

"I'm sorry, I wasn't aware that the section of the Ibiza forum in question is only open to members."
I was out and about today, and I'm only just getting a chance to write here now.

The most important content from the thread in question had already been posted by Jan (thank you ).

I'm still interested in the question I asked at the beginning, whether the tuning, for example, can be overwritten with the normal performance during an inspection.

Hi Ulf,

Using the latest VW/Audi diagnostic technology, it is possible to flash the corresponding software versions of the control units, but you need the appropriate access codes and software for this. When an update like that is performed, a new dataset is created, and yes, that means the changes are also lost.

Regards,

Sepp.

Hi,
OBD tuning has been/was available since the introduction of flash memory in engine control units.
Sure, here's the translation:

'possible.' The tools (Flashbooster, SPI, etc.) are all quite expensive.
OBD tuning is simply a form of standard chip tuning. One saves time.
Just the soldering work inside the control unit.
When a software update is installed during a service, the...
modified data away
The current generation of engine control units (ECUs, EDC16) cannot yet be accessed via readily available OBD (On-Board Diagnostics) tools.
Bottles and performance-enhanced ECUs (Engine Control Units) can be properly disposed of after an update.
to be brought

Best regards, Rudi.

Is it common practice within the Volkswagen Group to install software updates? If so, one would expect to hear more frequently about lost performance after service visits. I have never heard anything like that before.

Hi,

It's likely that not many modified EDC16 units are currently in use on the roads.
'Furthermore, there are supposed to be some tricks that can prevent the update.'

Best regards, Rudi.

Rudi wrote:

Furthermore, there are supposed to be some tricks that can prevent the update.

Hi Rudi,

Can you tell me more about these tricks?

Hi Ulf,
Unfortunately, I don't have anything concrete yet.

Best regards, Rudi.

Hi,

As far as I know, the newer engine control units (ECUs) all have a single PLCC32 EEPROM chip that contains all the characteristic maps. The older STG units in the VP-TDI systems have 2x PLCC32 16-bit interfaces (Lo and High).

Regarding Ulf's question:

You could certainly also solder a base plate and use a chip with double the capacity, and in the middle, you could connect the pin to ground via a switch.
This allows VW, Seat, Audi, and Skoda to update the standard software as often as they want, but they will never reach the "tuned" or "performance" version. You should just make sure that the switch is also in the correct position.

The disadvantage, of course, is that you'll still have to do some soldering.
But with OBD-2, you could then change as much as you like.

Greetings.
Thomas.

Hello Thomas,
It's correct that newer engine control units (ECUs) only contain a single memory chip.
Unfortunately, it's no longer a PLCC 32.
Currently, the TSOP56 package (with a 0.5mm pin pitch) is being used. Before that, it was PSOP44.
All of these are 16-bit wide components.
Mounting a heatsink can be difficult and expensive, especially if the heatsink physically fits in the available space.

Best regards, Rudi.

Hi Rudi,

Ah yes, one never stops learning.
But theoretically, it should be possible with double the capacity, if...
"will the socket be soldered onto the board?"

Do you perhaps have a photo or something similar of a circuit board like that?

Greetings.
Thomas.

Hello Thomas,
I couldn't find a suitable photo quickly.
Basically, it works with the switching and will...
e.g., this is also done with PSOP44 packages. If the base doesn't fit there,
Are there also adapter boards available?
Things are different with the 56's. There are indeed pedestals that...
'but they are really expensive, and AFAIK they also have a different...'
Footprint (so that they don't fit the footprint area of the circuit board).

Best regards, Rudi.

Hi Rudi,

The adapter plates are the things that the tuners use to build their copy protection sockets.

Quote:

Things are different with the 56's. There are indeed pedestals that... "but they are really expensive, and AFAIK they also have a different..." Footprint (so it doesn't fit the footprint area of the PCB).

Even though the effort probably no longer justifies the benefit, it can...
You can certainly find an adapter for that. I'll try to gather some information about it and post it here if I find anything interesting.

Certainly, if it's possible, that would be a way to prevent updates.
I can imagine that after the update, one could simply re-run their own update process if everything necessary is available.

But the easiest thing is probably to make a really big detour around every authorized repair shop.

Greetings.
Thomas.