I have a MY 2009, C4S. The tire pressure readout is always as +1, +2 etc. Is there anyway to get the actual psi reading ?.

 

Yes, my 2010 C2s is just like your car (997.2). Your owners manual is the easiest way to "tell" you how to go through the menu with the left info stalk. It can be set as per your car or actual readout which I prefer. I leave the center info cluster on this setting as there really isn't anything else more important to view unless you like to know the song on the radio or the fuel economy !

 

Mine reads the actual values and I didn't even know you could get the deltas.

Same here. Also leave the central display to TPMS.