will the chip from a 97 torus3.0 fit a97 ranger

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can I replace the computer chip from a car to a ranger . will it help with th gas milage? I am getting 13 mpg now. also I keep getting a code for the 2--4 cylinders missing. I have replaced the plugs and wires.
the compresion is all even. The why is the milage so bad?

posted by  jireman

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