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Discussion Starter #1
I have transplanted an E34 535i from an Alpina B10 3.5 into an E9 coupe. I did not fit the engine.

I have recently taken the manifold off and there are two small pipes sticking out of the bottom which are not connected. They are obviously an air leak so the engine isn't running correctly, but can anyone tell me what they are for? Maybe I am missing a vacuum pipe for something important.

The pipes are marked in red on the attached photo. Can anyone help?

Intake Manifold.jpg
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