Weapon R Secret Weapon Performance Creates two different paths of airflow, both flowing at different air speeds. When the two air paths meet, they create a vacuum, multiplying the air speed and forcing more air into the engine at a higher rate, creating MORE HORSEPOWER. CNC mandrel-bent 6061 aluminum tubing is hand tig welded in sections to ensure a constant balance in airflow, regulation of airspeed, positive seal and proper fit. System is carefully tuned. The intake system's tube size, length and secondary tube diameters are matched to your engine's displacement, air intake capacity and air speed to guarantee best performance possible. The high-density polyurethane foam filter has been shown to produce flow rates up to 80% better than conventional cotton filters....superior dirt filtration, too. Filter is easy to clean. Limited one-year warranty.