Sodbuster Jr.
New member
I've been looking at getting some custom tunes for the OBS in my sig. Only problem is that this pos Superchips will not turn on when I plug it in to the OBD II port. The truck was tuned a long long time ago with it, and never used again. I've checked the fuses, and they're all good. My scan gauge turns on when plugged in, so that leaves the programmer. Now onto my real question, do I need to have the PCM re-flashed before I put a chip in, or can I slap one in it while it's tuned? This is the only thing stopping me from getting a chip.