we definitely did check ring gaps and the ring gap spacing was done correctly on each piston. I have cleared all the codes and tried to start over with it several times, but, of course, it just throws code 19 again the next time I try to start it. I think I am going to find a manual ecu for my car so I can rid myself of the dreaded CEL (plus I can't get my car inspected with that light on!), but then I worry about wiring issues. Will the plugs match? Will the wires match? Where can I find wiring diagrams?