I sent a stage 1 pcm to Flight systems and had it flashed with my VIN. After install the car will not crank. It will not even turn the starter over. I can plug the old PCM back in and reconnect the battery and it will start right up. The lights and everything work with the stage 1 it will just not start.
Your stage 1 pcm might be bad. I know if it has the wrong vin # it will still start the car for about 5 seconds then kill it, cause the SKIM is mismatched.
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