The Scan Gauge is so 80's! :R
There are so many better wifi and bluetooth ODB2 port code readers that you can record, watch current data, look at and remove codes ON YOUR PHONE OR TABLET without the unbilical cord of the Scan Gauge or other type of ODB2 reader.
The one I have I use with my iPhone 5s via wifi, and it gives me all the gauges that the Scan Gauge gives. I use it to monitor my coolant temp, intake temp, HP and Torque, and most importantly the dual O2 sensors. All on the screen of your phone. Imagine that! :B
I use the
LYL Elm 327 Wifi Wireless OBD2 Car Diagnostic Reader/Scanner purchased for $23, and then $10 for the Dash Commander App for iPhone.