Ok so I have a 91 Hatch with a ful type r. It just started throwing a CEL. I checked and it's 4. I have a obd1 ecu, distributor, and injectors in it. It is sputtering like a bitch. I replaced the plugs, cap and rotor and it still does it. It also bounces 2step which is at 4k. But the speed sensor works fine so I don't unberstand why it would do that. I tried 3 distributors total and it does the same thing wit all of em. Lemme kno wat you think. Thanks.