with my 2003 3.0 I got 18 city and 22 highway stock. After I got my MAC Performance intake and the flowmaster super 44 lightning style exhaust I went to 22 highway and 16 city. About to put in the new 20% UD pullies I got and from what I heard it will help out the highway mpg some. The thing that will recover my city mpg is the SCT X3 with custom tunes that I will eventually get.
It also depends on the gears being run in the rear end. With the XLT I think that you are most likely running 3.73 gears. My Edge has 4.10 gears so city mpg sucks compared to 3.55 and 3.73 gears but has more low end power.
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2003 Ford Ranger Edge 3.0L Vulcan Auto Tranny
MAC Performance Ram Air Intake
Flowmaster Super 44 w/ tailpipe before the wheel
Interior and Exterior LED w/ music interface
Ford Racing front and rear Sway Bars
Limited Slip with 4.10 gears
http://www.cardomain.com/ride/3114321
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