I recently purchased an EK with a b18b swap. I own a delsol with a B18c swap. I'm not a newby to swaps - but this one baffles me. When I bought the car - it was throwing 4 codes. Crankshaft Sensor, IACV, Coolant Temp, and Intake Temp. I did the crankshaft sensor splice. Ran a hard wire for negative on the IACV. got rid of every code except Coolant Temp. I tried to Hard wire to Coolant Temp sensor. The guy that had the car before has the fan wired to the headlights. When I ran the negative to the ecu - it trips the fuel relay. That makes no sense to me whatso ever. Any ideas of where to look. Running OBD1 B18b. on 0bd2a P2E, or An OBD2 P75 either way - same results.