to help with your gas milage problem. you can do one or all of the following.
change/inspect air filter
change fuel filter
lose some weight. (think that every 100 pounds was like 1-2 off your mpg?)
inflate your tires a tad more but dont go over the rated tire pressure.
mods that would help increase mpg
throw in a CAI/WAI
change muffler to somthing less restrictive (no fart cans)
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