This could be an airleak after the airflow meter, any ventilate dragged in here isn t seen by the ECU and correspondingly not compensated for and can thin the engine out and can after that allow the engine to rev going on in the same way as not desired causing aggressive running. As its a mechanical irregularity it tends not to tilt upon the irregularity vivacious and you can sometimes hear a hissing noise past the engine running.
Thanks for your response. I just checked what you mentioned, that I hadn't already checked, except fuel pressure.Let me tell you a tiny more approximately the difficulty history. It currently has a master tech approved idle expose rule valve and tps installed. without touching anything, the last (used) ecu and my original, would rule in the car without this symptom.
I don't have any check engine lights unless I unplug the MAF sensor. behind the MAF is plugged in next the car will stall unless I put my foot on the accelerator. There is next an intermittent popping sealed coming at idle.