Hardback

Riad, Im having the same issue but my tech is telling me the check engine light could be caused by bad O2 sensor/s either before or after cat or the cat/s themselves. How did you decifer that you need new cats and not new sensors instead? Did they swap sensors first? Cheaper solution obviously...

redridge

I would check the codes out first.... but as for Fabspeed vs FVD, the cats are made by the same german shop (HJS) but I would look at the build between the two... one is better than the other.

Zookie

i would look at Customer Service

Riad

I'm going to buy a code reader tomorrow... check the codes myself and take it from there. I will not be replacing the OEM cats... if I have to go down that road I'll just go Fabspeed or AWE and at least have some fun.