I know it's not an edge but my quad mileage max resulted in only a mpg increase. Suggestion: increase the timing manually instead of paying for a box that does the same thing.
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2004.5 Ram 2500 5.9L 4x4 3.73s Edge EZ, Willy's Whistler air intake, muffler MIA, lube and filter by AMSOIL, Extang Tono Cover "do yourself a favor, always get your dog or cat spade or neutered and always hand calculate your mileage"