Help!

My E46 is playing **** with me. Any guidance please.

In the morning when it's cold it idles like ****.
When its warm it struggles to idle jumping from 300-600 rpm.
When I plug in the mass airflow sensor it cuts out.

I had 3 different mechanics look at it and none of the said they could find any air leaks.

The throttle body was clean.
there was a new idle control air valve fitted.

Please can somebody help me.

Thanks

U might wanna check the disa valve flap make sure it's intact. Valve is connected to the intake manifold right above the idle control valve.

Do you know what methods these mechanics used to search for vacuum leaks?
I still think it may be vacuum related.

Btw ...I'm trying to figure out that first sentence in your post.
"Your car is playing _____with me"
I think it might be funny, I wish it wasn't censored.