Looks like Hypertech came out with a new Programmer specifically for fuel economy. There's no info on the Hypertech Website but it doesn't look like you can adjust gear ratio's or tire size but I don't know. Check it out at stylintrucks.com and oh yeah it's only $330
Hypertechs new Max Energy E-Con Programmer
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It looks like the Max Energy Econ is exactly the same thing as the regular Max Energy minus the 93 Octane tune. The Regular Max Energy Tuner allows 87 or 93 Octane so for the strictly MPG guy you can save 50 bucks. I'm checking to see what kind of mileage increase is yielded right now so I'll keep this thread updated as well.
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