Ok Im not going to lie I have never been much of a Honda guy but this car has got me going. I bought it with the B18B already installed and the guy who did it hacked the harness appart putting the motor in. I fixed the wires that had places to go now going through the rest of the motor harness I have found a few wires that were wraped up in a ball with electrical tape. what I want to know is how do I tell if this is an OBD I or OBD II motor setup and my other question is what is the little round sensor on the front of the motor in one of the tubes of the intake? This sensor is not hooked up to anything and the car runs rich at startup and stumbles around 1500 rpm. If this was a small block chevy I would have no problem figuring it out but I have never spent much time under the hood of a honda, a testiment to how well built it is. if anyone can help me that would be awsome I want to have this car on the road for spring so the more work i can do now the better off i can.