Excuse my ignorance, this similar to K&N filters? How much does it cost and can I install it? What exhaust system did you go with? I'd like to get a Borla system.

 

The Air Raid system is about $450 CDN. You should order it up here you will probably save a few bucks US dollar vs. CDN dollar. I like the Gibson exhaust. The one I'm going to get in the Spring is the called Gibson Sport it has the dual pipes on the passenger side one piece (muffler and dual outlets about 3.5 inches wide.) It lists for about $950 CDN. K&N has basically the same air system as Air Raid. Belive it or not that combo is great for a little HP and gas miliage. Put your truck has a cool sound to it when you get on the gas.

 

Tonneau cover gave me about 2MPG on my Ranger. With the 4 Cylinder I see as much as 28 on the road. Have not modified the 2004 F150 any yet, but the computer is telling me about 13 to 14 in the city and 18 to just below 20 on the highway so far.