WTF is a velocity stack???

[black_vertigo]

I realize this may be a dumb question, but what is a velocity stack intake exactly? I just want to know how it works and what it looks like (my car is EFI, not carburated, if that helps).

[boostaholic]

velocity stack basically smoothens out the air flow so it will travel faster than it really is.

however some people argue that the fuel air mixture will be better if the incoming air has more turbulance rather than having a smooth flow.
that is why some people only port instead of doing the infamous port and polish. because polishing will not create any turbulance..

both theory makes sense. i guess it is a trade of.. faster incoming air? or better fuel air mixture?

im not gonna make any stand poeple both seem logically sound...

[mike_sho]

A velocity stack is kinda like an airplane wing. Where there is an angle to increase flow on one side. Looks somewhat like a horn. Where the start is larger , then get smaller to increase that flow since its squeezing into a smaller space or more or less it has a larger opening.



Heres what it looks like on a throttle body. The intakes have them usually in the filter or near it at the end of the intake pipe.

Just another way / theory to increase horsepower from an intake system.

There are a few different things you can do to an intake to try to change up how it performs. Theres also resonance tuning and multi-resonance tuning. Which I believe the aem V2 is trying to achieve.

Happy Tuning.