Quote Originally Posted by shogun
Not sure if that helps, but read the problem and how it was solved
http://www.bimmerboard.com/forums/posts/360519
I will try that tomorrow, disconnecting the O2 sensor.

Is it possible to clean the MAF by spraying carb cleaner on it? I know I should not touch it, too delicate.

Can you hear how air moves inside the air intake manifold? I mean a shshsh sound with hood open. I can hear it if I rev to 2000, higher than that engine sound becomes louder. no such sound while in idle. I looked where I could, sprayed carb cleaner on hoses and under the intake manifold, but it did not see any increase in rpm. I always had this sound and thought it is normal. I think it is the sound of air moving through intake manifold. am I right?