The Velocity Stack
A velocity stack is a trumpet or Bell shaped device that may vary in length and width. Velocity stacks ensure the smooth entry of air eliminating turbulence and increasing efficiency. Often fitted to the intake side of modified internal combustion engines velocity stacks have become well recognized part found on most race built completion engines.
How it works
Providing a smooth and even entry point, bringing air at high velocities into the intake tract with the flow stream adhering to the pipe walls.
By adjusting the size and shape of a velocity stack one can manipulate the dynamic tuning range of the intake tract. This works by functioning as a resonating pipe which can adjust the frequency of pressure pulses.
What did you get from the factory?
Unfortunately for us enthusiasts OEM engine manufacturers are forced to deal with many regulations, of course noise must be kept to a minimum. A properly tuned intake tract will produces a rather audible tone under high airflow conditions, while this is viewed as a lovely sound to us gear heads others tend to think differently. This “noise” is commonly (tuned out) to allow the vehicle to pass noise regulations.
Factory K series manifold being hand ported on the tops of each runner.
Simply put by giving your engine the tuned intake tract it needs to operate at peak efficiency your engine is able to make more power with less effort. Velocity Element products have been developed for flat out performance to increase mid range torque as well as top end HP. Needless to say we do not have to worry about noise regulations like the OEM manufactures.