Alex's OBD-II scanner rules. You can monitor all of the I/O from your PCM, like coolant temp, timing advance, MAF readings, O2 sensor readings and associated fuel trim values (am I lean or rich?). About 300 or so values can be monitored once the enhanced data is set up properly, although not all are used on the Contique. You can also see all CEL codes and any pending codes as well as clear the codes (and reset the PCM in the process w/o pulling fuses or the battery cable). You can record data and replay or output data later. Very handy troubleshooting tool to have.
