(from Champion Motorsport)  Enhance the performance of your 997 with the aid of Champion Motorsport's newly developed F77 Power Package.  The twin ram air inlets of the carbon fiber airbox provides increased airflow to the engine, while the free flowing Tubi Style exhaust delivers a sound like none other.  To further optimize power output, the factory ECU is recalibrated with GIAC performance software.   Experience greater throttle response, increased drivability, and overall performance with the installation of our complete power package.