pinoyFMtC -
Welcome to EM! The tC is a gorgeous little car. If they had offered the original xA/B drivetrain I would have been verrrrryyyyy tempted.
If you are racing, I wonder if you have thought about a fuel controller (not cheap!!!). I'm only asking because I think you've got a lot of tuner culture to leverage with the Scion. I don't have any experience with fuel controllers.
CarloSW2