Lets think about this for a second,dont you think that if something like this offered any advantage at all - in any area,all the car manufacturers would all be doing it.
Its like the old snake oil. "Put this in your engine and its 20% more economical" yeah right. Magnets to go round your fuel lines? As far as Hiclones go, I dont see how creating more internal drag in the inlet is going to help at all.