Experience with DPFs from Cordierit (Kamoka, Ernst, Walker, etc.)

Hello everyone,

I had to replace the DPF because it failed at 250,000 km. Since a new DPF at the dealership currently costs 1,800€ (part number)
(18307812279), ich habe mich entschieden, das günstigere Angebot auf dem Markt zu wählen und einen DPF der Marke KAMOKA (8010003) gekauft und eingebaut zu lassen. Nun, mein Auto läuft einwandfrei und es treten keine Fehlermeldungen auf. Die Ergebnisse der Messung des Abgaswiderstands und der Luftmassenmessung liegen stets im Soll. The initial regeneration following implantation also proceeded without complications.

What bothers me, however, is that the exhaust fumes are very pungent and after about 600 km, the bumper above the exhaust becomes slightly yellow with the filter. Is this normal? I drove with the original DPF (BMW-Eberspächer) for a total of 9 years without any fumes or discoloration. I can actually live with the Muffens due to the significant price difference, however, I am concerned about whether my car will pass the emissions test at the TÜV.

Has anyone here had experience with the cheap DPFs from Kamoka, Ernst, Walker, etc., regarding emissions testing?

Hi
What emission standard does the car have?

[Translating...]

EURO 4

I think that's where nothing should happen.