Im like 99% sure it was B135 pin 25. There was no pin there to begin with, so we had to make one that fits in there and ground it. My buddy Spencer was working feverishly trying to find this supposed pin. He was the one that found it and ground it.
Which by the way, this pin is NOT listed on the wiring diagrams for the ECU that I listed above, nor was it in the diagrams in my service manuals. It was listed elsewhere in the service manuals which made it nearly impossible to figure out.