school me on velocity stacks

[KurtP]

Going to build a new intake. the AmsOil inverted cone air filter i want to run advertises a "built in velocity stack" Are "velocity stack filters" adequate for or does the velocity stack need to be built into the piping of the intake? Does it matter?

 

going to upgrade the MAF with a KSTech intake to fit my cobb box, so this is what I am looking at.

http://www.theboombopshop.com/Injen-Ea-Nanofiber-Air-Filter-X-1047-BB-p/x-1047-bb.htm

 

and

http://www.kstech.biz/servlet/the-54/73mm-MegaMAF-Big-MAF/Detail

 

or i can get

http://www.kstech.biz/servlet/the-143/73mm-MegaMAF-Big-MAF/Detail

 

and a amsoil filter (regular cone, not inverted cone like the other one) but then there would be a velocity stack in the filter and on the pipe.....

 

advise

[mattg]

Not sure what you're asking.

[KurtP]

whats the purpose of a velocity stack? And since the filter I want to use has a velocity stack built into the cone, should I get the intake pipe without the velocity stack(ie straight piping) or get the intake that DOES have the velocity stack machined into and end up with the intake pipe and the filter having a 'velocity stack'.

[brum]

Velocity stack - http://en.wikipedia.org/wiki/Velocity_stack

 

They're spewing BS.

[KurtP]

awesome. So it makes no difference which one I get and I can just get the cheaper one then.

 

luv it

[CasopoliS]

Even piecing one together on your own can get expensive. Another reason for me to make intake kits....

 

http://legacygt.com/forums/showthread.php/gi-73mm-poor-mans-intake-135959.html

[John M]

I don't think the velocity stack idea BS at all. Basically they're saying the inside of the filter has an integrated velocity stack near the coupling end (after the filter media). What's so BS about that?

 

FWIW, my $12 intake is doing well. TurboTime had no problems tuning it for a rock solid AFR. It is beyond absurd that people manage to charge over $100 for a 6-8 inch piece of pipe with a hole in it. I am sooo tempted to buy a bead roller and some aluminum pipe and just start spewing them out for $20 a pop.

[Blameless]

It is no BS, trumpets aid flow big time, just look at any high end application involving flow of air/water/petrol and ask why they designed it that way. COS IT FLOWS BETTER.

 

VS/Trumpet is the way to go for flow :-)

[KurtP]

So original question. Is the velocity stack inside the filter adequate or does it need to be in the pipe

[CasopoliS]

So original question. Is the velocity stack inside the filter adequate or does it need to be in the pipe

 

I would think so. It just evens out the flow pattern so its consistent across the MAF. At least that is my interpretation. Velocity is mostly determined by the thirstiness of the large air pump on board (the engine).