This could be an airleak after the airflow meter, any air dragged in here isn t seen by the ECU and therefore not compensated for and can thin the engine out and can next permit the engine to rev occurring following not desired causing scratchy running. As its a mechanical fault it tends not to point of view on the anomaly spacious and you can sometimes listen a hissing noise in the same way as the engine running.
I did re-check them tho. The master tech did extensive tests upon the air flow meter and said it was good. like I unplug it and manage the motor, the car runs brusque and at 850ish. I can lonely guess that my other rebuilt ecu has an issue, or the tps needs to be re-adjusted, or someway my maf has died in the midst of all this. I don't think the tps has that much run in the every second of rpm though? I think it isolated adjusts it on the subject of 1k..
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you up to date upon every maintenance; spark plugs fuel filter pcv vlave etc? have you performed a visual inspection and listened to engine as it warms in the works and is warmed up? oftentimes in engine pretense many factors may cause the same symptom(s)