I average 20-22 mpg on highway, and around 15 mpg in town, that's taking it easy of course. If I drive it like I stole it then its terrible on gas. It's worth noting that when I went from stock to my current setup I gained a few mpg. Guess all the free flowing parts help (keep in mind that driving style may have a lot to do with it). Check the usual culprits: Tune Up, Fuel Filter, Injectors, pump, MAS, Timing and Fuel Pressure.
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