i searched but only found a couple things about similar problems. my car stutters and bogs pretty violently when i am at partial throttle. i mean i barely have my foot on the accelerator. when i have my laptop hooked up i watch the a/f ratio graph and it goes into the red when the car bogs and stutters. i have no check engine lights. when i rev the car up slowly to 3000 rpms while in neutral i can see the needle drop every now and then. i was thinking it could be a fuel pump problem that could be fixed if i get the deatschwerks fuel pump, but i guess it could be a sparks plug issue or maybe even the injectors? i bought a bottle of lucas fuel injetor cleaner to see if that helped at all but nothing. Please ephatch gurus help me out. if there is something you need to know please tell me.