This could be an airleak after the airflow meter, any expose dragged in here isn t seen by the ECU and consequently not compensated for and can lean the engine out and can with allow the engine to rev up when not desired causing rough running. As its a mechanical deformity it tends not to incline upon the fault roomy and you can sometimes hear a hissing noise next the engine running.
Its plus worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a ill pump will every consequences in insufficient fuel instinctive delivered to the engine. Might plus be worth cleaning out the idle eagerness control motor / valve as these get clogged going on when carbon and some brake cleaner washed through helps free things off.
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you taking place to date on every maintenance; spark plugs fuel filter pcv vlave etc? have you performed a visual inspection and listened to engine as it warms going on and is warmed up? oftentimes in engine perform many factors may cause the similar symptom(s)