Some real world GPH numbers from a gas powered '97 400DA

I calibrated my Garmin fuel flow meters once at set up and never again in 5 years. It was within a couple of gallons everytime I filled up. (I rarely add fuel, I fill it up.) After set up all I had to do was tell it I filled the tanks so it could reset the fuel onboard.
 
RollerCoastr, where did you cut into the fuel line to install the meters? I installed Lowrance fuel flow meters on my 37 DA and it was very easy - I loved them. Not sure if I want to go this route or get the Fox units.

Two things that would make me lean in the direction of Fox is the other data they can provide aside from fuel, and the fact that my GFS-10's are giving me trouble. I was told that they're of a higher quality than Lowrance, yet nowhere near Floscan.

My meters are on the bulkhead fwd of the stbd engine, directly below the fuel manifold. I included a pic in a write-up I did at the time: http://clubsearay.com/index.php?threads/my-garmin-fuel-meter-installation.64256/
 
I calibrated my Garmin fuel flow meters once at set up and never again in 5 years. It was within a couple of gallons everytime I filled up. (I rarely add fuel, I fill it up.) After set up all I had to do was tell it I filled the tanks so it could reset the fuel onboard.

That's been my experience too, so I'm curious about Brian's experience. I should note that when I reached out to Garmin about the issues with mine, they kept talking about re-calibrating them. I didn't do that because I didn't think they were listening to me: they work perfectly, until they don't. I felt like they thought I was complaining about them always being wrong, in which case calibration would make perfect sense.
 
That's been my experience too, so I'm curious about Brian's experience. I should note that when I reached out to Garmin about the issues with mine, they kept talking about re-calibrating them. I didn't do that because I didn't think they were listening to me: they work perfectly, until they don't. I felt like they thought I was complaining about them always being wrong, in which case calibration would make perfect sense.

Glad others had a good experience as well. I too am curious about Brian's experience.

MM
 
My experience has been great, I plugged in the boxes, wired in the network and was off to the races. Never touched them again. Like I said I had one of the first NAVMAN fuel flow meter systems (not Garmin, I was incorrect) it was terrible and needed constant recalibration. I had a Garmin GPS that was prior to having the ability for fuel flow data.

Looking at some friends boats with Garmin nav's I think the Garmin has more flexibility, the Raymarine is a bit limited but still gives me the data I want.

Here is a pic of the Fox Marine box for the Starboard engine and the backbone for the NMEA2000 network - I attached it to the main bulkhead


IMG_0037.JPG
 
My experience has been great, I plugged in the boxes, wired in the network and was off to the races. Never touched them again. Like I said I had one of the first NAVMAN fuel flow meter systems (not Garmin, I was incorrect) it was terrible and needed constant recalibration. I had a Garmin GPS that was prior to having the ability for fuel flow data.

Looking at some friends boats with Garmin nav's I think the Garmin has more flexibility, the Raymarine is a bit limited but still gives me the data I want.

Here is a pic of the Fox Marine box for the Starboard engine and the backbone for the NMEA2000 network - I attached it to the main bulkhead


View attachment 62026

Great, thanks for the explanation.

MM
 

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