Sportec Beefs Up the Audi RS6
1 Apr 2010, 08:02 UTC · By: Andrei Tutu / Yet another tuner stands up and shouts that the 580hp and 650 Nm (479 lf-bt) of torque offered by Audi RS6’s V10 are not enough: The Swiss tuner Sportec has developed a two-stage tuning pack...