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Hi, I am new here and in quite desperate need of assistance. My RS6 started first with smelling exhaust in desember, then the errors progressed. It had a tune, and I visited the Audi dealership without them finding any errors except measuring a really high CO emission of about 10. Then I got it detu...

Hi, I am new here and in quite desperate need of assistance. My RS6 started first with smelling exhaust in desember, then the errors progressed. It had a tune, and I visited the Audi dealership without them finding any errors except measuring a really high CO emission of about 10. Then I got it detu...