Well I too am in the same boat just bought a 90 coupe SE model that the previous owner parked cause of the same issue....I keep being referred by friends back to airflow and fuel flow...I changed fuel injectors, fuel pump, fuel filter, coil pack, distributor, MAF, TPS, O2 sensor, exhaust keep in mind the parts came off of a perfectly good running KA. Picture below....I hope we can both find a solution???
