AIRAID provides a dramatic improvement over factory air intake systems. Increased airflow of up to 20% and gains of over 15HP are common. AIRAID installs in 30 minutes with common hand tools, with no cutting, drilling or fabrication. Fits Ford F150 and Expedition 4. 6L & 5. 4L V8 engine 1997, 1998, 1999, 2000, 2001, 2002, 2003. May whistle when used with a throttle body spacer. |