STOCK = 552BHP --> TUNED = 668BHP STOCK = 516 ft/lbs --> TUNED = 685ft/lbs Audi's 4.0 TFSI is mighty in RS6 & RS7. However much power was left on the table to allow room for the RS models. VelocityAP's software unlocks nearly 100BHP and huge torque, without overtaxing the engine.