Review on High Performance K&N Cold Air Intake Kit: Increase Horsepower for 1999-2004 Ford (F250 SuperDuty, F350 SuperDuty, Excursion) 5.4L V8, 57-2525-2: 50-State Legal & Compatible by Lancy Rakesh

Great air intake! I had one of the $100 on my old truck. It was good but nothing special. The filter that comes with the air intake lets through a lot of pollen, which is not very good. I fitted this air intake to my new truck and it has exceeded all of my expectations. We'll be worth the money. very pleasant noise when downshifting. I haven't tried checking gas mileage with it, but I imagine it would be an improvement, especially with my Gibson exhaust. very easy to install. One of the clamps was a bit small but you can get it working. Amazon said it doesn't fit my 1999 F250 Super Duty, but it fits perfectly. I highly recommend this product.