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poor gas milage

  1. 1990 2.3L mustang poor gas milage

    2.3L Tech
    :smoke:Im only gettig 14-19mpg's city/highway 23-25mpg. modified free flowing k&n filter 2.5 exhast w/better flowing cat complete tune up E3plugs msd wires msd coil plugged egr new map sensor. no maf sensor. what canb the possibilities for por gas milage?
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