Well Ill tell you what Im working with first and then you guys can help me from there. 89 Civic DX with 96 d16y7. Car is still DPFI and obd-o with original ecu and dizzy. Got an obd-1 d15b7 MPFI intake mani. What kind of ECU, dizzy, and injectors (obd-1 already on it, can get obd-o injectors if its any easier) will I need to run this all properly. Its the changes in the management system that confuses me. Will I need to go obd-1 ECU and dizzy or can I still use a pm6 and 88-91 si dizzy. Also, I heard that if you use the obd-1 injectors, you wont need a resistor box. So can somebody clear that up for me as well? Thx for any help.