Last year my power commander died, got ahold of a local Busa guy to get some help. We didnt know it was the PC3 at the time, he reached into the tail pulled out a wire harness end, stuck a peice of old wire into 2 of the holes and a code came up on the time screen(06BTW). he went got a book and looked up the code, figured out it was the PC3. anyway whats with the self-diagnostic thing? and no I cant ask him, hes not so good with returning calls apperantly. maybe I smell bad thanks guys