1990 honda civic, zc motor with db6 written on the head. my question is, is the db6 a zc motor? i know it sounds noobish but i really can't find much info on the motor. secondly what is the correct ecu for this motor? currently i'm running it on a pm7 obd0 i believe. is this the correct setup? is this a obd1 motor, is a change of ecu necessary or can the pm7 work perfectly fine with no problems? i'm not a rich guy but i do want to see this car running nice and smooth and i'm still trying to learn so any help with be appreciated. pics are posted below.