Tuning ATT Autotechnik studio submitted a revision to the program the BMW 3-Series, which they consider the best ever produced before. Tuners have prepared two levels of preparation of the technical changes. The first of these increases the power of a standard 306-horsepower 3.0-liter Twin Turbo version up to 345 hp 335i The torque then increases from 400 to 481 Nm. All this is only through the installation of an additional controller. The second level includes the installation of a new exhaust system made of stainless steel, which allows to increase the power to 362 hp an increase of 19 hp more than the previous generation M3 E46, and the torque increases to 546 Nm. Tuners predict BMW 3-Series convertible a stylish 20-inch wheels ATT TEC LeMans, “shod” in Michelin Pilot Sport tires 2 dimension 245/30 front and 285/25 – behind. Exterior accessories include the installation of the radiator grille in the style of M3, as well as LED turn signals. The interior can be modified to order.