What do you mean by switching the housings? Did you put the internals of the springomizer into the housing of v2 plus? That housing with large, semicircular holes in the bottom? I can't see how this thing is changing the airflow.
I tried it today and it doesn't seem to change the airflow. The bottom o-ring on the positive pin should seal which means the airflow goes through the AFC ring, in to the positive post and up under the spring through the body. Unless it is used without the bottom o-ring like the video Imeo made with a larger o-ring in the bottom. That may make more air flow but I didn't try that, it is airy enough for me already.