Hello must absolutely with my Calibra 16v to the Tüv. Unfortunately the previous owner cleared the cat empty. A new original cat costs about 300 euros, a lot of money! Have already rapped off all the scrappi ́s, nowhere is something used to get. Have now seen at Ebay nen Universal-Kat with e-mark for 100 euros. Does anyone have experiences with so much part? Do I buy the ASU and is the cat for the TÜV ok? Hope for quick help MfG must the cat have an e-mark at all? Are there a lot of offers without.