Stock FMIC is not great, wasn't great on the N54 either. You know this
If you want back to back consistent power an FMIC is a must. I don't need logs to know that.
However, a log may find something further. If your boost solenoids are louder then normal, they may need replacement and that can affect power up top too and efficiency.
Give them a light tap and see if the noise goes away.
Only takes 15 seconds to log. Get out there and do a 3rd gear pull