....and I'm an environmental engineer/scientist and work with wastewater treatment and powerplant stack designs. Engineers spend countless hours designing ways to increase flow and keep air/fluid velocity up. If this "spiraling" design was effective, we'd be using for sure, especially in our stacks. The reality is NO spiraling occurs and it's simply not even possible. Even if the air were to spiral, it would serve no purpose.

The only thing I could see this thing doing is increasing lower rpm throttle response fractionaly since you're increase intake piping length.

 

What's a blitz filter?

Some kind of replacement filter for a Pop Charger?

 

yes a blitz, is just a filter like k&n.

 

Blitz has a decent replacement panel but if he's using the blitz sus cone filter, it's terrible:

http://www.mkiv.com/techarticles/filters_test/2/

If they have a cone replacement that's similar to their panel, that would be great. I couldn't find it though