I verified you guys are right. Gotta bring car, new ECU, and key fobs to Subaru dealer to get it all programmed. Can't plug and play with ECUs, at least not on the '06 Tribeca. Can't just grab another ECU and throw it in and expect the car to run.
I have checked wiring extensively but didn't check for voltage on the ground pin for injector 1 at the ECU. Just go from the ground pin to ground, correct? Won't I have some voltage drop across the injector?