Swapped an LS1 (04 gto engine and computer) into a 73 firebird, using a new BP standalone harness. It fired right up, seems to run fine, but has a p0200 code, injector circuit. I ohm tested all the injectors and they checked out, 12V at all the injector plugs, the noid light flashes on all but cylinder four. Not sure where to go from here, thanks for any help...

 

Yay, figured it out when doing a continuity test on the harness, pin number 44 (injector four) was not inserted all the way on the PCM side and it wasn't making contact. Nice quality control by BP automotive.

 

Good thing it was that, because otherwise, you'd need a new PCM!