This looks like a variation on a product back in the fifties that was supposed to save gas. It was a plate that looked like the restricter plate used by Nascar under the carburetor, only with little free spinning blades in the holes. The theory was the spinning blades would super atomize the gas and make the combustion more efficient. Voodoo science or gimmick I suspect.
Chili Pepper Red
Sent to Mallett 2-21-07
Delivered 5-11-07 # 007 "Beast"
LS-2 400 HP
Magnaflow Custom True Dual Exhaust