looks like you didnt read it as well
new pump generation is controlled by an electronic control unit, housed inside the flange of the supply module. Because the pump will only supply the engine with as much fuel—whether gasoline or diesel—as its operating status requires at any given moment, much of the electrical energy usually needed can be saved. Intelligent control saves between 60 and 70% of electrical energy compared with traditional constant fuel supply systems. In a 1.8-liter engine, this can mean a CO2 saving of 1.5 to 2 grams per kilometer