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What fuel booster and how did you "flash the computer?" I also own a 99 F350 with the 7.3 Diesel and have a Bully Dog chip on it which improves the mileage a good bit. At this point, my Nitro is getting a little better mileage than the F350 - but not by much (and the 350 weighs 9000 lbs.)
Last edited by mtdean : 09-10-2008 at 02:58 PM.
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