OBJECTIVE: Wet flow, pressure excursions, port volume, runner length, plenum volume—all these figure into an engine's overall efficiency. But there's more… Sometimes theory is neat, but sometimes it ...

Editor's Note: As inanimate as intake manifolds may appear, they provide a path to both major and minor on-track power gains. Selection is one thing; "tuning" them to specific applications is a blend ...

Form and Function - A Look at Intake Manifold Design: Intake manifolds play a huge part of power production, here’s some of the hows and whys Internal combustion engines are fairly simply machines.