just picked up a 91 CRX HF with a b16 swap running a PR3 ecu and i'm sorting its issues i have cels for cyl position, IAC, and when you hook up the reverse switch and put it in reverse it dies. I am pretty well versed in swaps but these problems have me and my boy scratching our heads.

 

if you are throwing an iacv code your car must idle shitty so try cleaning it out. as far as the cyl positions sounds like you have a bad dizzy or wires my be open

 

When you put it in reverse and it dies are the reverse lights coming on?