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Old 01-20-2020, 07:11 PM   #22 (permalink)
Ecky
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ND Miata - '15 Mazda MX-5 Special Package
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Be aware that you will need to run a full tank through it to calibrate it, possibly two. I think I had mine within 1% after my second calibration. But until then it can at least show relative savings. For instance, you might let it idle and toggle the hydrogen system on and off and observe the measured gallons per hour, to see exactly how much difference there is in gasoline usage.
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