I have had lot of problems with this particular motor swap on my 90 crx. Right now my problem narrows down to 2 final things before i can get my car out of the shop. I have a skunk2 obdo to obd1 conversion harness that i have connected to the stock crx harness nd i have an extra wire that my mechanic thinks goes to a heated o2 sensor but i dont know. Plus i need the diameters for the stock crx excaust and for the headrers off the civic manifold so that i can get the downpipe to connect the two.