Hey guys new to the site and new to the car, so bare with me. Just bought a 99 gp se with the 3.1 117,000 on the clock. I'm getting about 15-17 mpg city driving and driving like a sally. I changed the plugs, injectors (owner said one of them stuck when the car sat so i just changed em), air filter and cleaned the throttle body plate. The plug wires look new so i left them. The car runs and drives great nothing weird going on or ses light so im stumped.