I've been googling around, but still don't know what kind of tires pressures to run. They're stock sized 225/45-17.
Brian I would talk to Joel Ferhman or Brian Whitmore on nasioc/scca forums. Tire pressures are really dependent on suspension set up and driving style. I used to run my v710s 45f and 48-52r depending on how hot it was outside. But my car had only the ohlins shocks and stock spring rates and the rear was way too soft. I would also make sure that you have a good amount of front camber so you don't easily cord the edges as A6s tend to do on heavy car with the the engine on the front two tires. Edit: there is an SEDIV event this weekend at AMS, it would be a great time to get some advice and test out some pressures.