I have a 2001 mitsubishi eclipse 2.4 4 cylinder. P0302 code, runs rough under load, smooths at higher rpms, shakes. Replaced plugs, wires, no.2 injector, switched modules and still no difference. Someone suggested a burnt exhaust valve, but dont want to go there unless needed. Cleaned maf and still same. Any help or suggestions welcome before it becomes a boat anchor.