Reprogramming the AGR control?

Hello everyone.

What do you think?
Can the control of the AGR (Abgasrückführung) magnetic valve be reprogrammed so that the AGR only activates at 0% throttle pedal position and fully closes at approximately 10% throttle pedal position?
Do you think a tuner can reprogram it like that?
Or is that even possible with VCDS (Vag Com)?


Best regards,
Mario

nothing???

Does anyone have a clue?

I don't believe that's possible. If it were, it would definitely be included with a tuning chip. But I think the EGR valve should always be faulty.

Hello,

If you increase the 'target mass airflow' value through engine control unit adaptation, the EGR rate should decrease (which can be observed by the duty cycle of the EGR solenoid valve). -> Try it out.
It seems like the soot limit curve is being adjusted here, but this action has no effect on the power output, which I've already tested.

Best regards, Rainer.

cool

Thank you, Rainer!

Let's test that right away .

It's not a given that the tuners would include that feature! After all, the vehicles still need to pass the technical inspection (TÜV), and they might fail if that feature is present.

kenny wrote:

It's not a given that the tuners would include that! After all, the vehicles still need to pass the TÜV inspection, and they might fail because of it...

Okay, so, with my chip, let's just say, someone messed with the TÜV certification.
"No one will believe you if you claim 125 horsepower from a 90 horsepower engine. Furthermore, all values improve except for NOx when the EGR system is broken. You get less CO and less unburned HC, and incidentally, the exhaust gases are diluted by the EGR system because more fresh gases are blown through the engine. And during the emissions test, only the percentage of the exhaust values is determined, not the total amount. As far as I know, in Germany, only the smoke number and the CO percentage are evaluated."

So, in Austria, they usually only measure the CO (carbon monoxide) levels and the smoke number.
However, not all workshops do this, because some have already damaged engines due to high RPMs, as one workshop manager told me.

My personal TÜV inspector doesn't measure anything at all .

Seas Wuze(lla).

Where in Carinthia are you from?

I'm from Feistritz/Ros.

My mechanic always writes down some random number without checking anything *g*.
Sure, here's the translation:

"Best regards."

Coooolll, another one from Carinthia.

I'm from Feldkirchen (unfortunately).

Deleted as requested.

wuze60 wrote:

Coooolll, another Kärntner! I'm from Feldkirchen (unfortunately).

"I agree, Felkirchen seems like a nice place. I know a few people from there. I actually thought you were from the Rosental area, because we have so many people from there here *g*."

Best regards.

'In the software, there's a setting for the exhaust gas recirculation (EGR) system. Any competent tuner can adjust this. Whether they will is another matter. The effect is the same as disconnecting the EGR. If you're caught, you could face charges for tax evasion.'
I think a reputable tuning company wouldn't bother with that (and the less reputable ones probably wouldn't even be able to find the engine map...).

Stefan wrote:

In the software, there is a field for exhaust gas recirculation. Any competent tuner can adjust this. Whether they will do it is another matter. The effect is the same as disconnecting the EGR. If you are caught, you may face charges of tax evasion.

Thankfully, chip tuning is legal. *g*

... there is also chip tuning with TÜV approval!

I am aware of that.

Only the majority of the chipmakers are ignoring it.
I'm included.