Transmission or Boost Leak?

[DeliAhjusshi]

Seems like an intermittent issue but once in awhile I'm crushing at highway speeds and there's a slight loss of power and then a second later everything is back to normal. Gas pedal seems to go limp as well when it happens. No CEL but haven't checked for codes yet. Never owned a turbo'd car before so don't know what a boost leak feels like, but thought I'd check here before my next service appointment. Car is a 17 F80 DCT with 10k miles.

Thanks in advance.

[G4BR13L]

Could be all kinds of things such as a faulty mass air flow sensor, the fuel pump, … .
First thing to do is hook a computer or use Bimmerlink to read out any faultcodes.

[andrei.m4]

Did you found the problem? I hava same issue. Thanks