I have a 8 ecu in my 7. I was running a 90552701-v7 in my 7 ecu. It was perfect. Had no choice but to get a 8 ecu after damaging the 7 ecu. Flashed the 90552701-v7 rom in my 8 ecu. Giving me o2 sensor fault. I flashed 96532706-TephraMod rom. o2 sensor fault is gone but get other codes randomly. Right now I get MAP sensor fault randomly. can't turn that off. Plus when mapping I get random knocks pulling timing but no knock voltage spikes.

I don't know what to do. Do I look out for a 7 ecu to put back in or is there another rom to for the 8 ecu I can use without fault?
Help!!!