I have an extremely odd case and I hope someone can determine the problem. I have a 2006 mustang
GT that had a 91 octane tune. Today I put back its stock cold air intake and planned on returning to the stock tune. When I connected the SCT tuner to the onboard diagnostic port, the SCT tuner turned on for only 2 seconds then shut off. The SCT tuner will no longer turn on any more when plugged into port. My car dashboard lights wont turn on either and the engine turns on but shuts off 2 seconds later. What is going on??