Stumbled on this item found this on ebay. I'm not a guru when it comes to car engines but is this for real?
The Super Fuel Saver is a Magnetic Frequency Resonator for the purpose of ionization. When this device is installed on a fuel line, the frequency resonance generated by its powerful magnetic field will fracture the hydrocarbon chains in the passing fuel causing the clusters of molecules to break a part. This will lead to improved combustion and consequently to a better engine performance and increased mileage.