Optimizes airflow, air density, continuous power, durability and MPG. Adds up to +45 hp and +47 lb-ft (rear wheel). 5.4L V-8 engine only. The Ford F-150: the most popular truck in Ford's F-Series and the best-selling vehicle in the U.S. for most of the last 25 years. But that doesn't mean we can't make it even better! Banks targets the problem areas and opens the door to maximum performance and mileage. By eliminating power restrictions and slashing the exhaust backpressure, your F-150 will really wake up. PowerPack optimizes the F-150's engine airflow, horsepower, torque, durability and efficiency in one beautifully engineered package_and sounds great doing it!