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Old 10-09-2006   #26
rst95eclipse
Re: new australian intake manifold for the 4g63

That paints a clearer picture for me. And I understand why they would want a velocity stack, since the port can pull air from a larger area. But why create turbulance. The velocity stack "compresses (for lack of a better term)" air from a larger area while the stack pulls it in. Why "rough up" the air? Why not streamline it so that it flows better/evenly? The more air you pull in, the better. So why slow the air down in the plenum for it to just wait? I've got gas to burn, let's move it.
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