BAR-TEK Chiptuning for Audi RS6 Plus 4.2L Biturbo 480 HP engines. Please choose from following configurations: Chiptuning V1: -Hardware original -approx. 40 HP more power -approx. 110 Nm more torque Please send your ECU to us after purchase. Other configurations on request. Manufacturer Information about the manufacturer BAR-TEK BAR-TEK Motorsport GmbH Im Rauschen Auel 3, 51491 Overath-Brombach, Germany info@bar-tek.com