APR Ultracharger Throttle Body UpgradeThe APR Ultracharger System dramatically increases horsepower and torque, and maximizes the power potential of the 3. 0 TFSI. It removes a massive pre supercharger restriction, allowing uninterrupted airflow into the supercharger for up to an astonishing 542 HP with APR's Supercharger and Crank Pulleys. Stunning carbon fiber and smooth cast aluminum adorn the system, creating a clean and simple install that looks just as powerful as it is. Finally,