I just got an S5 a couple on weeks ago, actually 3 weeks to be exact. I've done an oil change and changed the spark plugs and tuned her up a bit. I had noticed the air pump belt was missing but, since I had an S4 before, I thought the 5 and 6th ports were exhaust driven on s5's too. I just finished reading that on s5's the aux ports are air pump driven....I don't have an air pump belt on......just a guess. but uuhh, ARE MY 5TH AND 6TH PORTS NOT OPENING????.....I'm gonna answer my own question.....No.