What is Smartfuel OBD? Smartfuel OBD is a chip that lifts driving productivity. It connects to your vehicle's OBDII interface. Otherwise called an EcoOBD2 attachment, Smartfuel OBD and comparable gadgets guarantee to conceivably save you many dollars each year on gas. Simply plug Smartfuel OBD into your vehicle's OBDII port (each vehicle made starting around 1996...