13 and climbing at the top end.. very similar to mine, IMO you'd be better off using the 8psi tune, but you could use the 10psi tune if you don't give your car too much sh*t. These cars are built tough so you should be alright. As for the aircon thing I'm not too sure. When you go to get your custom tune done, get the injectors and cat done at the same time! *Hello 300rwkw*