Stephen
If the car is running fine I would do what Mr Tony suggests.
If you have running issues (in my case when I had AFM failure the car ran erratically) then you'll need the AFM for whatever BMW engine is in the Super Sports. It'll most likely a Bosch item so once you have part number can be found easily on the internet or many motor factors.
AFM itself, again if same as S1, is located on top and front of engine where air intake pipe comes from air cleaner. Replaceable without removing any bodywork, at least on S1.
Cheers
