Step 1: Start a thread about how K&N air filters are a scam and don't fit your RS4. Step 2: complain about the replacement filter not fitting. Step 3: Share a picture of what's clearly the cabin filter.
Welcome back to Auto Forum Troll Of The Week, where we shed light on the seedy, clever and sometimes-annoying world of forum trolling. This week, taking the term "welding the differential" a little too seriously.