I see references to PCM #'s .. for Bin's and such.. How do I identify the PCM i have? it's an OBD-1 1994 s10 Blazer with the CPI 4.3L, I found the correct definitions file (a178) trying to figure out what I need to edit tuning information.

also, it's apparently a replacement pcm, so i'll have to post some pics when i retake them...