If the airbag wasn't working properly then Id suppose it would show an error?
I fitted my B7 mfsw myself, no airbag faults, I changed the slip ring. the Mf is not working yet because I need the B7 module but will get that sorted soon as well. I can do it for you if you want, Im located in Ireland :O
Has no one tested duel air bag on a single air bag set up?
Or at least been in a crash?