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On the intake manifold there is a flap that opens and closes. It appears to have no use at all. You can see the outside of the valve between the Y shaped intake manifold. On the inside of the manifold right before it goes into the motor there is a gold valve that splits the manifold into 2 area's when closed. When it opens the manifold is one open area. But the manifold splitting into a Y shape would split the air anyways. Hard to describe something you see in writing. Hopefully some one know's what I am talking about.

Derek
 
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