http://www.intrinsicperformance.com/pr_vstack.html

My AVO kit came with one under the K&N filter.

 

Vibrant has something similar now. The part number isn't on their site but it is in their '08 catalog. See them in this pic:

 

We have these but just in 6"-3"...

 

Is the intention that you run this without a filter?

 

If I wanted one of those I would just buy a junker Alto Sax on ebay for half the price and cut its bell off.

<---------------- See, it would work.

 

Not in my AVO kit. The K&N attachese to it.

 

You could probably cut up a metal mixing bowl.

 

nah, it curves the wrong way...

 

I always thought that the anodized aluminum ones look killer. If they can be run with a filter I'd be all over a gold anodized one

 

Just slide some panty hose over it...

 

very true!

 

I know K&N makes filters with 6" holes.

 

I wonder how long it will be before some ricer sticks one of these on his tail pipe?

"Mad JDM trumpet tip YO"

 

Egg cup?

 

subwoofer flared port

 

I have my old bass trombone...lol.

 

Here's my intake design theory:

1. A bell-mouthed thing flared to transition the air flow to near-zero at the mouth.
2. a smooth transition to a "filter chamber" that is the proper area to maintain mass flow rate and still filter well.
3. a smooth transition from the filter to the turbo inlet, ideally the same size and approach angle as the compressor inlet.

The reason I like the filter BEHIND the bellmouth is to allow the thing to do its job. the filter mounted to it will disrupt the flow I think. Though since the velocity is low, maybe it's not going to.

 

Haha!
I've got a couple of those in my closet that would work perfect!