I just got my car back and it is bogging bad. I dont know what it could be. Its like when I start in first it hesitates then its like the power just cuts on at about 3500 rpm. Its like that in every gear does anyone know what it could be? It was doing it with my old engine then I upgraded to a 3.0 and it is still doing the same thing. I know this engine only has 3k on it.