Discussed many times and I agree we don't buy Hummers for gas mileage. But there's been a lot of questions on whether some of the aftermarket devices increase MPG. I recently installed the Hypertech III and Airaid filter/MIT. Now I'm a very consistant driver. To & from my office every day with few other trips. I don't reset my AMPG everytime I fill up. It's been 8 months since I last set it. My average MPG has been 11.8 and just as important the average speed was 26 MPH. Belive it or not 75% of my daily ride is on the interstate but with our traffic and stop lights long enough to have sex with the wife and still wait for the green (that otta get some comments) it kills the MPH average. I reset everything last Friday. I'm at 12.2 MPG at 24 average MPH. Looks like an improvement but way to early to tell. I'll keep you all posted after a few more fill ups.
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Jonahs
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