Airflow metre fixed but still issue

Hi guys

So I had this issue with erratic idling on my car and thought it was the airflow metre...I replaced the airflow metre with a new one as well as new plugs. The car revs clean and everything but I can still feel a slight rough idle and almost sounds like car has cam in. Do I need to reset ecu or tweak the metre? It's the first time I have fitted...any other idea on what I could check...car tends to cutout when I reverse or put it into drive....I disconnected the airflow metre in interim
and car is fine....any idea what it could be?