The Grand Prix is Senner Tuning's take on the new Audi S5 Sportback. Starting with the engine, the German company brings output from the standard 3.0-liter TSI's 333 horsepower and 440Nm /325 lb-ft of torque to 375HP and 495Nm / 365 lb-ft. The power boost comes from a reconfigured ECU, the addition of a performance air filter as well as a custom sport exhaust system with four tail pipes.
