This is a write up for everyone that has just purchased (you need the paid version) the torque app and needs some help setting it up.
First off open the app and go to the settings menu.
Then toward the bottom of the menu select Manage extra PIDs/Sensors.
Click add predefined set and select Pontiac/ GM/ Opel/ Vauxhall.
Then uninstall the app then reinstall it.
Open it back up and go to the main menu and click realtime Information.
In here you will setup the sensors and parameters you want to look at.
Touch the screen and hold for a few seconds and a menu will pop up.
Click add display and you can add everything you want to monitor.
I have all mine set as Digital Display you can do as you see fit.
The most important things you want to check are Knock retard and probably your long and short term fuel trims.
Any suggestions will be added, let me know.