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the unit by itself will not give you better gas mileage, but it should make you aware of how your habits impact your real time gas mileage. So in short, if you have the ability to take the information and try to optimize it (typically slow down, brake less, and cancel slow) then it might make sense for you. You could also just spend alot of time reading on driving tips on here and cheaper mods to save gas/money immediately.
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