I think it might work...if it does...... by the swirl effect creating a vortex which speeds up the intake flow at the outer edges of the intake tube and allowing a faster flow...working like the spiral mufflers are supposed to. Might not have much to do with increased turbulence or vaporization. Just a guess.
I remember something about someone trying swirlers on a 3 L na Nissan which has a long intake tube...he said the people selling them told him he needed to use 2 of them due to the long intake. Never heard as to the results...he got sort of booed off the forum.
Think you want to use the stationary type...not the one that spins a propeller....would be sort of pointless?
Here's an Ebay search for various gas saving stuff:
Don't have to pay $70 to try one? You can make one yourself if you look at the pics...just a strip of heavy sheetmetal with the vanes cut and bent...getting the right number and angle might be an issue though. Would want one losing a vane though.
Leading the perpetually ignorant and uninformed into the light of scientific knowledge. Did I really say that?
a new policy....I intend to ignore the nescient...a waste of time and energy.