The Lancer platform was completely redesigned in 1996, and the Evo IV was the first model to feature the new engine layout with the engine and transmission rotated 180 degrees. This was done to improve weight distribution and help eliminate torque steer. The stripped-down, race-ready RS came with extra bracing, front and rear limited-slip differentials, steel wheels, crank windows, no A/C and thinner glass and body panels, while the heavier GSR utilized a new Active Yaw Control (AYC) system and enjoyed nicer interior appointments. With its large, distinctive fog lights and new twin-scroll turbocharger, the Evo IV quickly sold 10,000 units. Power and torque were up to 276 and 260, respectively.