[Gasoline Fumes]

I can't offer much advice, but you should be getting much better MPG. My 188k mile Civic Wagon has the same drivetrain and got 38 MPG before I started ecomodding and hypermiling. And I do much better now, with no engine mods. Brakes dragging? Alignment? Timing? How fast do you drive?

I do have a weird timing issue that may help or harm MPG....