Direct injection gasoline(Dig)technology is the fastest- emerging power and economy enhancing innovation in the powertrain sector and with the 2L F Sl (volkswagen AGs direct-injection acronym for Fuel Straight Injection), Audi and its W parent is leading the pack Audi says FsI will be its gasoline-engine linchpin going into the future. Soon, every audi-brand engine will feature the FsI system FSI adds new levels of power and torque, yet also delivers fuel-economy gains that, at the least, offset what typically would be lost in generating increased power. For example, although the 2L FSI develops 30 hp and 40-plus 1b-ft (41 Nm) more torque than the smaller 1.8T(as used by Audi), a continuously variable transmission-equipped A4 with the new engine gets 20% better fuel economy in city driving and does 10% better on the highway.Direct injection gasoline (DIG) technology is the fastest￾emerging power and economy enhancing innovation in the powertrain sector and with the 2L FSI (Volkswagen AG’s direct-injection acronym for Fuel Straight Injection), Audi and its VW parent is leading the pack. Audi says FSI will be its gasoline-engine linchpin going into the future. Soon, every Audi-brand engine will feature the FSI system. FSI adds new levels of power and torque, yet also delivers fuel-economy gains that, at the least, offset what typically would be lost in generating increased power. For example, although the 2L FSI develops 30 hp and 40-plus lb-ft. (41 Nm) more torque than the smaller 1.8T (as used by Audi), a continuously variable transmission-equipped A4 with the new engine gets 20% better fuel economy in city driving and does 10% better on the highway