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Old 07-16-2010, 03:18 PM
TexasXB TexasXB is offline
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Age: 36
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Engine: 2003-2008 345ci (5.7L) Hemi V8 345hp 375lb/ft
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Default Crazy gas mileage

My 05 5.7 has recently started having some odd gas mileage issues. I can set the cruise, and watch my mileage fluctuate 5-7 mpg, in a as little as one minute. I have always checked my on-the-fly mileage, and kept a general idea of miles/tank, so I know this is out of the norm. All I've done to the truck is cold air (4 months ago), exhaust and EGR valve ( 1 week prior to issue). Any ideas?
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