I have my TBI set up firing, about to get the mufflers run. What will be my next step? I am running a 7747 ECM on a tbi conversion intake on a stock rebuilt Vortec 350. I currently have 13 PSI fuel pressure, and the SES light will come on, blink, then stay on. It stays on though after you fire it until you disconnect the battery. I have no scan tool, not sure what I need. I do have a spare laptop with windows 7 and nothing else on it at the moment, just not sure what I need. I am perfectly fine with getting someone to burn a chip, as this is not a performance build, and I don't like to tweak much, lol...