Alright... for the second time in my career, I've got a car I'm trying to diagnose, and I've got absolutely no clue what's wrong with it.
Came in, V6 misfiring on the front bank, all three cylinders... but only for about 10 seconds after engine start. I checked about everything I could, swapped some parts around. Came to the conclusion I needed to try a different engine computer..... switched that from a donor car, and ended up with more questions than answers.
With a different ECU, the problem switched from the front bank to the rear bank. It literally makes no sense at all.
But the car also needs a transmission, so I'm hoping the owner elects to not put any more money into this possessed car.