can anyone give me some insight on my problems ?  i deleted my o2 heaters from my 557p  file which i flashed to my 558m  ecu the car starts and  runs fine and i no longer get a dtc for my o2 heaters  but now i get p0601 powertrain internal control module memory checksum error  i checksumed the  file before i wrote it  i used  q10 editor and winols and they both said the file was fine ?

could it be caused because i put the 557p file on a 558m ecu  the way i understand the ecus are pretty much identical ?

i also got a dtc for p0422 powertrain main catalyst efficiency  below threshold bank 1   i believe that one can be solved with a o2 spacer!  any input would be greatly appreciated

i fixed the checksum so i am down to cat below threshold  do i just put a spacer on that or can i adjust some parameters  in the file ?