Nice that sounds awesomeThat...
Well, I use mine occasionally as another gauge set. I have it reading IAT, ECT, MPH, and MPH with GPS, and other stuff.
Basically you can see anything your car has a sensor or calculated data for.
-EDIT: usually I just use it as a radio. Hacking my phone to broadcast wifi, that the radio connects to, then Pandora, it was one of the best things ever!