I have a 95 civic ex with 200000 miles on it. I've changed the dizzy, wires, spark plugs, fuel injectors, fuel pump and i'm going on E around 150 miles. I'm seeing everywhere else that you're supposed to get around 300 so i'm confused as to why my gas mileage is so ****. When I drive mainly on the highway I get about 200 but that's on a good day.