| I have the Scangauge too, I look at intake air temperature, water temperature, iginition advance and open/closed loop.
It's interesting to see how soon the open loop is engaged. This means that the Oxygen sensor is not regulating the mixture. In open loop the mixture is regulated by internal stored mixture tables.
The ignition advance I also didn't work either, but I think the ScanGauge is too slow to capture ignition advance (and MAP) correctly because of the slow OBD protocol. | 
