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 ...

If you are any kind of gearhead or have worked with engines for even a little while, then you are likely familiar with the rules of thumb when it comes to intake manifolds and horsepower. The main ...

Last month we showed what gains were available from three aftermarket Three-Valve intake manifolds in naturally aspirated trim. This month we're going to try the same three intakes, only now we'll see ...

A modified intake manifold can increase the oomph of your car. Read on to know what kind of a system to go for and the factors to be kept in mind The intake manifold in a car feeds air into the ...

Intake manifolds may not be the most well-known automotive components, but that doesn't take away from their importance. These devices are responsible for sending a precise mixture of fuel and air to ...

The air/fuel mixture entering the engine reaches the inlet valve at the pressure in the inlet manifold (the Manifold Pressure). Unless the throttle is wide open, this pressure will be less than ...