Abgaswerte zu hoch / keine AU?
Guten Tag,
ich habe ein A3 8V 1.8 TFSI Quattro von 2016.
War gestern beim Tüv – und kam leider nicht durch die AU.
Da ein Sportauspuff verbaut ist wurde ich zu einer Tuning Werkstatt von ATU weitergeleitet.
Dieser meinte KAT wäre in Ordnung allerdings sind Mittel sowie Endschalldämpfer leer geräumt, dadurch bekommt der Kat kein Gegendruck und kann daher nicht richtig arbeiten wodurch die Abgaswerte vermutlich zu hoch waren.
Daher wollte ich hier einmal fragen, ob das sein kann oder ob der mir nur ne komplett neue Auspuffanlage andrehen möchte.
Falls es Sinn ergibt: Kann jemand für das Modell einen Sportauspuff empfehlen? Ab Kat?
LG
(1 votes)
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I can’t answer.
But would rather tap no.
Since the cat is actually the narrowest place in the exhaust system. Therefore, the argument with the back-storage seems to me somewhat strange.
If a sport cat is installed?
Yes, there’s a race/sport kit installed with downpipe
What do you mean “empty”? This does not happen by itself, but only when you do this manually and open the pots. But then you would probably be able to see from closing welds. In your place, I’d go to another workshop. That’s enough for a completely normal free workshop. There must be nix with tuning. With A.T.U, a lot of bad experiences have been made because things weren’t necessary and parts on the bill weren’t necessarily necessary.
Probably was empty by the previous owner. Bzw the two silencers are simply completely empty. Welding seams can also be seen. But the main question is whether the meaning of the KAT does not work because it does not get a counterpressure due to silencers. LG
The previous owner didn’t come to me ass before….
Talk to the master in your Audi workshop.
I am almost sure that a “empty” exhaust is not permissible.
No is not allowed. I bought that. I have to change in front of the plant. Just asked the question because I wanted to know if the point is with the CAT.
Go to the AU and see if the cat or the lambda probe has to be new.
I can’t recognize that. Looked at me on the Internet and found it here:
For exhaust gas counterpressure
In general, in the case of a turbo engine, the exhaust gas backpressure should be as small as possible in order to facilitate the ejection of the exhaust gases to the engine so that the energy loss at the 4th cycle remains minimal. However, each resistance in the exhaust line increases the exhaust gas counterpressure. By the way, it is a rumour that each motor requires “something counterpressure”. Even in the case of suction motors, support of the exhaust gas flow by resonance is desired and possible, but no counterpressure!
In addition (not so obvious) the exhaust gas counterpressure is increased when the exhaust gases cool too much on their way to the outside. This is due to the fact that the gas becomes more denser (heavier) the more it cools, and thus the engine has to apply more energy to push the cold dense gas back.
Such a cooling of the exhaust gases results, for example, when the pipe diameter of the exhaust system is selected to be too large, i.e.: Less is here m
The built-in sports exhaust obviously has no authorisation. The AU would have to fail.
Yeah, I was told too. I have to change in front of the plant. Just asked the question because I wanted to know if the point is with the CAT.
Of course. If the pressure is too low, the CAT does not work properly.
By the way, a sports exhaust is a harassment for the other people, lowers the performance and ensures increased consumption. There’s nothing sports.
Well, empty, that’s not a sports exhaust for me, but a bunch of riot sheets. Between sound and noise, there is a difference that some unfortunately do not know and find Krach cool.