I recently purchased a b18 ls motor, i was getting ready to swap it into my 1995 honda CX. I was using my stock CX harness because i was told it would work and the only thing i would have to change is the 1 wire to 4 wire O2 sensor. I went to hook everything up and i noticed on the intake it did not have the MAP sensor on the throttle body and also a EVAP purge control solenoid valve. I think the whole intake manifold is from a OBD 0 car. I bought it from hmotorsonline and they told me they was going to convert a OBD2 to and OBD1 motor but i think they put the wrong intake on it! The motor has PR-4 stamped on the intake what does that represent? Could i just put a new throttle body on it? or do i need to change the whole intake? Is the EVAP purge control solenoid valve necessary?