It is always wrong TVUB, provided hardware is ok. Log misfires too and you will see it misfiring.
What injectors are you running?
I have been running Genesis I 415cc injectors with my OEM 1.8T AGU TVUB values:
V 7,960 10,000 11,970 14,010 15,980
1,707 1,141 0,661 0,491 0,341