I have a 1984 Dakota with a GEM 602. I would like to install a fuel flow sensor and am contemplating my options. I don't really have much space left in the panel to install a new gauge so I was thinking of either getting a flow meter that would plug directly into my GNS530, or upgrading the GEM 602 to a G2 (Don't think I have a need for the G3 at this point). Insight has a trade in policy that would allow me to send back the 602 and get a G2 for $1600. It is supposed to be a direct replacement for the 602, and I would just need to have the fuel flow installed.
I like the idea of having the fuel flow in a separate box so I don't have to keep switching pages on the Garmin. I'm hoping someone has experience with either of these methods or products that they would be willing to share.