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Hypertech has a bad name among chip mods. I drove over the holidays 870mi. I topped off before trip. I figured the feul mileage with trip odometer and 42.xxx gallons purchased it came to 20.4 mpg. I have rechecked again it came out correct. Does Superchips and Diablo do better?
are you aying you are ungappy with 20? or just comparing? 20 would be wonderful. I orderd superchip microtuner, it is not here yet, but I will let you know the verdict
