I'm still learning about this car, sooooo different ( high maintenance queen).. ave you done any maintenance for the fuel system? Have you tried any fuel additives/treatment? Such as Lucas fuel treatment, Redline S1 or the Techron all I read about are pretty good. Also, have you changed your fuel filter? It's on my maintenance "to do" checklist. Also, do a search for MAF sensor, try cleaning it, might help.
Some things to try. I'm sure other members might chime in.
'11 328i (sold)
'07 Audi A8
'03 745Li (sold)
'03 Acura TL-S (sold)
'15 Toyota Sienna Limited Premium w/Dynamic Cruise
'15 Infiniti Q50 Premium w/NAV & 19'' Wheels