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Old 06-29-2009, 01:50 PM
glc glc is offline
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Join Date: Dec 2006
Location: Joplin MO
Vehicle: 2003 Ford F150
Posts: 9,201
A tuner would be money better spent, unless you are lifting it and putting bigger tires on it.

What year is it, and what's the current axle ratio?
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2003 F150XL 4.2 short cab/bed 4x2 5 speed manual 3.55 LS
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