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now I know why my buddy asked me "are you going to work the intake before you put it on?" are they really that bad? How much more can you pick up? Mine is right out of the box.



Bad, no, but there is only so much you can get out of them, that's why the Weiand manifold exists for an all out race effort.

Anything you can do to clean up the flow is going to help, they at a certain point it becomes a cork, on a motor like what you have, no.