After a few libations I fell down the rabbit hole of maintenance on the S4 (Yes, I know it’s a giant rabbit hole). But I did have a question that I can’t seem to
get a straight answer on: Does the B7 S4 4.2L need the carbon cleaning? I see a ton about the RS4 needing it and then a ton of hodgepodge about the benefits/worthlessness of it on the S4. Just looking for some guidance from the Opponauts that have owned a B7 S4 well before me. Thanks all!