|
Since the ScanGauge reports fuel use, the data is available through the OBD port.
How ScanGauge got the data, I doubt they will tell (other than to 'buy the guage').
If you're good at code and wanna do some hacking, you could force the OBDuino to use the PID's anyways, and see what happens. Does it return a working value, garbage, or some strange value... (Just make the function to check supported PID's to always return a 'supported' value.)
You can dump the communications to the LCD if you wish (just disable the PID display in the code and instead display the chatter from the ECU when it comes in.)
As for saving the communications, you have a limited amount in eeprom (after the parameters).
You might be able to route data through the USB port to a laptop, but you would have a conflict with the OBDuino using those same TX and RX pins to chat with the ECU. More than one serial device is possible, but I've never attempted it.
|