OBX (product name "Votex") and another company (product name "Helix Power Tower") make a 1" throttle body spacer that is supposed to increase air speed and create a swirling air affect to enhance combustion. Both companies have Dyno results. [This is not the TORNADO I'm talking about that mounts on the air intake so don't get your man-panties in a wad and start spouting.]

My actual question: Does this work? At all? If not, why would OBX make it? And, why does it seem to sell reasonably well? Better mpg? More HP? Better combustion?

OBX - www.historyofcars-a.com/items/7948461182.html

Helix Power Tower - http://www.performanceproducts.com/P...producttype=20

Any info, experience, links, etc., greatly appreciated.