This could be an airleak after the airflow meter, any ventilate dragged in here isn t seen by the ECU and suitably not compensated for and can thin the engine out and can as well as allow the engine to rev up later than not desired causing aggressive running. As its a mechanical irregularity it tends not to incline upon the irregularity fresh and you can sometimes listen a hissing noise behind the engine running.
I did re-check them tho. The master tech did extensive tests upon the freshen flow meter and said it was good. past I unplug it and manage the motor, the car runs uncompromising and at 850ish. I can isolated guess that my supplementary rebuilt ecu has an issue, or the tps needs to be re-adjusted, or anyhow my maf has died in the midst of all this. I don't think the tps has that much rule in the interchange of rpm though? I think it solitary adjusts it more or less 1k..
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 taking place and is warmed up? oftentimes in engine statute many factors may cause the same symptom(s)