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And yes, had I known all this 5 years ago when I got into boating, I would have likely outfitted my new boat with Lowrance instead of Garmin. The Suzuki SMIS gauge, by the way, is a Lowrance LMF-400 with the Suzuki badge on it. Once the calibrations are done, the SMIS gauge and the Garmin read exactly the same information and become redundant. Really, I bought it just to calibrate my fuel flow. That, in a nutshell, is why I bought the Suzuki 4" SMIS Multi-function Gauge. But the interface and the sensors that are most readily available are made by Lowrance, not only for Suzuki, but for many outboard manufacturers, and it takes some instrument or gauge made by Lowrance to perform the necessary calibrations. It all boils down to this.the Garmin will read whatever the engine interface or any other sensor will send it.
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Again, that will require a Lowrance unit. But again I know of no way to select by which means your Garmin reads it within the Garmin unit itself. With the SMIS gauge, I can select how the gauge or the Garmin reads fuel remaining. That might not be clear, but there are two ways for an NMEA 2000 unit to read fuel remaining.1) via an NMEA 2000 sensor that reads the fuel amount in the tank, as a float valve would, and 2) by monitoring fuel flow as presented by the ECM via the engine interface, then using fuel flow to calculate fuel remaining. Lowrance also has an HDS emulator program for your computer, and you could do the calibrations with that, but it also involves the purchase of a USB/NMEA 2000 gateway, also not a cheap solution.Ĭoncerning your Garmin showing an empty fuel tank, have you told it that you filled the tank, or added x number of gallons? If you have done that, then you seem to be defaulted in the NMEA 2000 system to read fuel remaining by fuel tank level instead of fuel usage. You will have to do the same, or borrow one or a Lowrance HDS unit in order to perform the calibrations. I bought a Suzuki SMIS 4" multi-function gauge, just to be able to do the necessary calibrations. I had (and am still working on correcting) a fuel flow calibration issue with my DF150, and unfortunately there is no way for you to calibrate it with a Garmin unit.