INJEN® - PF Series Air Intake System

Ford Expedition 4.6L / 5.4L V8 2003-2004, PF Series Air Intake System by Injen®. The PF Series Air Intake System is made for high performance cars, trucks and SUVs. It features a larger air filter and a larger diameter air intake tube to meet the airflow demands of the large engines in these vehicles.

Features:

• A large air filter and large diameter air intake tube to maximize air volume
• Uses the patented MR Technology tuning process to ensure the air/fuel ratio is within optimum limits
• Custom designed and engineered to deliver maximum power for each specific vehicle
• Improves acceleration and fuel economy
• Every system includes the EA Nanofiber dry air filter
• Air intake pipe constructed of mandrel-bent 6061 aluminum or cast aluminum for smooth airflow
• Comes complete with all necessary mounting hardware and comprehensive installation instructions
• Street Legal in most States
• Backed by a Limited Lifetime Warranty
• Proudly manufactured in the USA

The big "deep breathing" engine in your high performance car, truck or SUV needs a PF Series High-Flow Air Intake System to unleash all of its power. The system starts with a large EA Nanofiber dry air filter, installed in place of the restrictive factory airbox. The large increase in filter area over the stock airbox filter results in a huge increase in airflow and a greater capacity to capture and hold dirt.

The increased airflow continues with a free-flowing mandrel-bent or cast aluminum intake tube in place of the factory air path. The use of a casting was necessitated on some applications to maximize the airflow and for fitment reasons. So, instead of power-robbing hot air squeezing through a restrictive air filter and intake duct, your engine is taking in huge quantities of air surging through free-flowing tubing. The result is increased horsepower and torque, and improved performance.

But unlike other air intake systems, Injen's patented MR (Mega Ram) Technology attains this increased intake airflow and performance while maintaining a safe air/fuel ratio. Injen steps down the diameter of the intake tube where the Mass Air Flow (MAF) sensor mounts, enabling the sensor to detect airflow within established parameters. The engine control computer can then maintain the proper air/fuel ratio and optimize horsepower and torque. Simply put, MR Technology tunes the intake system to avoid the necessity of recalibrating the MAF sensor, and prevents your engine from running too lean or too rich. With MR Technology, Injen created "The World's First Tuned Intake System", delivering optimum performance with a factory safe air/fuel ratio.

The PF system is carefully engineered, with CNC machined brackets and adapters, to ensure an exact fit. Installation can be accomplished with simple hand tools and everything necessary for installation is supplied, including comprehensive instructions. The PF Series Air Intake System is backed by a Limited Lifetime Warranty.