Velocity Stacks and Scoops ???

green1 said

Seal it, and that will also pull the engine temp down; as that hood scoop is ruining the air flow through the radiator.

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Please explain how the scoop is killing air flow through the radiator ? I am running a big electric fan pushing from the front through the radiator .This is a hobbie ,drag only car that sees no street use.Im not arguing or disagreeing ,id just like to know what your talking about in technical terms ,for my own understanding ,thanks...