I have a 1990 honda civic dx with a sohc zc motor. i was told by my electrician that my ecu needs to be changed. was checking out which ecu would be best for my car when a few questions started appearing and i could not find a definate yes or no answer or one that would answer my questions properly so here goes. When i search for the honda zc engine i keep coming across d15 and d16 motors. i get that the zc is a d series motor but does that mean it is a d16/z6 motor in particular or just a zc motor alone? can any d series part fit onto my zc motor? heard that the pm7 ecu would work best for my motor but it comes from a dohc and my motor is sohc. will this work ok? if so would there be any added benefits to using a dohc ecu on a sohc? just trying to get my head straight and ensure my car runs at its best.