I have used Torque Free in the past to monitor performance. I just recently got my crossfire and still mired in basic maintenance items that need to be done before I really dig into torque and what can be done. There is a list of codes that has been documented on CAN bus hacking.
Can Bus Hacking
I know torque has option for putting in custom codes. I have not done it myself. It's something I will be trying in the future.