Fuel Doctor FD-47 is a power conditioning device that works by simply being plugged into the vehicle’s lighter socket/power port closest to the engine. Our tests have shown that by utilizing power conditioning qualities of FD-47, vehicle’s computer systems can receive more accurate information, which in turn can lead to improvements in power and fuel efficiency.
The device is intended for use on vehicles two years and older, as newer vehicles probably have not experienced a significant amount of wear and tear on their electrical systems.
FD-47 CAN NOT be used on hybrid or electric vehicles.
The FD-47 must be plugged into the lighter socket/power port closest to the engine.
We now offer a 6 month money back guarantee!!
Learn more by visiting our How FD-47 Works page.