Everything has been checked over, and the battery was disconnected form the entire install time, so plenty of time to reset the ecu.
I checked for leaks using some soapy water to watch for air bubbles but nothing,
I'm not just randomly searching, as there is an abundance of sensors that are in the area and could have been disrupted during install, that were fine before, like the dpfe sensor.
If it was the Maf it would be causing a problem all the time, no?
It only happens when we are stopped, which is why I was leading to the dpfe as it is vacuum operated with the erg, possibly not getting enough flow at idle