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Densetsu »
https://forums.nicoclub.com/densetsu-u91979.html
Thu Aug 14, 2014 9:02 am
As far as I know the ECM on the R50's doesn't track trip fuel consumption, so it would be difficult to get at. Perhaps it does track it deep down somewhere, but nothing is reported via OBD II.
If you use OBD software like Torque Pro, you can have it estimate fuel consumption based on other factors like throttle position, MAF, speed, engine temp, etc. I tried using it and it's estimates were ~30% higher than my actual fuel consumption. There are options to calibrate it, but it wasn't important enough for me to spend time on.
I'd recommend getting Torque Pro (on Android) or the equivalent on iPhone, and a OBDII bluetooth adapter. It's probably your best bet for getting / deriving the kind of real-time data you want -- and it's a cheap way to read/clear OBDII codes to boot.