Hi every one. I'm another new guy. I bought a 92 CX around 4 months ago, i just like the body style. Any way the time i changed the spark pugs i noticed oil in them, so i started looking for a new motor (or used) and i've got a quote specifying the same price for a d15b and a d15z1. But before i boy the motor i want to make sure that i can put a d15z1 in my old CX, but i think it's going to be a matter of the ECU. I'm not heading to a great performance car, i just want to drive a good looking hatchback for some years. I know that i must read, but i don't seem to find the info that i'm looking for. If somebody can just tell me if i need to get a new ECU or if it is better to get the d15b and remain CX. Thanks for your time.