Not trying to hijack the thread, but has anyone tried the ScanGauge II, which has both OBD scan capability and a live monitor capability? The documentation looks like it does a lot for a very small device, and its available from quite a few places for $159. It also appears to be able to read most of the manufacturer-specific parameters. However, I'd like to get input from someone who has used one.
I would like to use it infrequently as a scan tool for troubleshooting, but leave it connected in my 2005 Mustang GT for live monitoring.