I bought someone elses project and after reading on the forums i'm confused. I have a JDM b16a with out the Pr3 ecu. I recieved a P72 ecu from a gsr. This is all going in to a 91 crx si. Is this going to work? Did i get screwed? What do i do? If i buy a obd0 to obd1 harness will i be ok?