I have the Lowrance hooked into my Mercruiser engine -- totally different setup than the Honda I imagine as I believe the Honda has a NMEA2000 connector on it directly.
That said, its a great feature. I can pull down fuel flow, MPG, engine hours, oil/fuel pressures, temperature etc. If the engine throws a code, it sends it in plain english. Had an IAC sensor fail a couple of years ago and the system sent me that in readable plain text -- part cost $20 vs. having a local shop extract a "boat unit" from my wallet. Without that capability, there would have been no way to know what the issue was.