i need help with this asap....tonight when i started up my sohc zc swap into my '90 hatch i got a code 20, which it didnt throw before and i am running the same wiring. I have a pm6 which i used in my rex before i wrecked it with the same sohc zc and it never had this problem. What are the main causes for a code 20????
Should i just take the fuse box out of the rex and put it in my hatch or do i risk messing it up also???? It is running really rough right now, it isnt as responsive as it was before and i am too afraid to even drive it in this condition....i need the car tomorrow because i have an appointment at a muffler shop to get the cat welded in so any help would be tremendously appreciated.

 

hey the hatch came with a b16a running a obd0 pr3 and i just read in a post archived on here that the pr3 doesnt look for the ELD and that the pin at the ecu is used for something else so is that why my pm6 throws the code? Would that really cause it to run like crap though?