Optimizes airflow, air density, continuous power and MPG. Honors the host vehicle and improves longevity. Total Work Power System. Tow all day power with lower EGTs. Stinger delivers tow all day with lower EGTs power. Intake, tuning, exhaust upgrades add up to +27 hp, +29 lb-ft (rear wheel), more MPG. 5.4L V-8 engine only. With its engineered intake, exhaust and fuel management upgrades, economical Stinger adds impressive power, efficiency and durability - and sounds great doing it! Stinger Bundle, Power System with Single Exit Exhaust, Black Tip for use with 2004-2008 Ford 5.4L, F-150, CCSB Crew Cab Short Bed Key Features Optimizes airflow, air density, continuous power and MPG Honors the host vehicle and improves longevity Delivers all day tow power with lower EGTs Power gains up to +27 hp/+29 lb-ft Single exhaust, BLACK tip Total Work Power System More MPG US Patent #5,581,111 S1 50 State Compliant CARB E.O. D-161-112, D-161-84, D-161-80