Car Exhaust Headers

What air intake system is better for a 4.2L V6 2004 f150, a Airaid or K & N?

Im getting an F150 and wanted place in an air intake system, but I do not know that air intake is better?

The contribution of air factory is better. Airaid and K & N will void any warranty on your engine and transmission as they are selling you Snake Oil. Re-sale value of your vehicle or other of the foregoing is substanially less. The oil these filters violating air mass sensors "since the O2 sensor flight south. You prompted some of your loss of your vehicle. ser luv

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