MID 128 SID 231 FM2 error code.. what does it mean and how to fix it??

Pablo today before I changed injectors I did injector balancing test again and injector #2 was -40% but this time injector #4 was showing +40%, 5th one was "normal" (+10%)

so I changed 2 and 4 and programmed all 6 trim codes because all of them wasnt maching previous trim codes in EECM..

after all that I did balancing test again and again injector #2 is -40% but all others seem to be OK..

Why its the same with new injectors in? Engine seems to misfire and has no power

Compression test shows 95% on all cylinders and there are no error codes

I did so much on this truck dont know where else to go

Please help

 

I did reset injector balancing values and it is still the same: injector #2 is -45% and inject #5 is +50% and over .. what else can be wrong? engine harness?