hp to ecm injector settings

I was testing my injectors trying to troubleshoot a misfire and i found that when turning off an injector in the scanner wasn't matching the injector on the motor, for example if i turned #5 off the injector that would turn off was #2, the same happened when i would turn off #8 the #1 injector would turn off. now i know someone would ask if i have the harness plugged in wrong but i can tell you it is an unaltered stock harness. any ideas if i can alter the injector position on hp to match the injectors on the motor?