How Does ProEco Fuel Saver Work? Fuel is a digital Tool you install in your cars and truck or truck to adjust its behavior. The device is likewise called an ECO OBD2 plug as it connects in the vehicle's OBD II port. ProEco Fuel Saver is part of a class of apparatus called OB2 chips. It is possible to acquire comparable chips via Amazon.com as well as various other merchants. Every car produced after 1996 has actually something called an electric control unit (ECU). This could be the brain of your cars and truck. It checks your auto or truck's efficiency and also enhances the engine, together with other functions. You placed in ProEco Fuel Saver and after that drive approximately 150 miles per hr. ProEco Fuel Saver gather data that is necessary to lower gas consumption. Visit ProEco Fuel Saver Official Website in the USA.