I have a P28 in my car and i took it out and put in the Ecu that came with my new motor P30 and now i put the P28 back in and now when i start the car i get a Cel .. .. has anyone ever had this happen to them ? Or what to look for . I counted the flashes and there was 2 long and 6 or 7 fast .. i replaced the Tbs sensor and its still on