anyone ever try one of these in their 5.4 3 valve motors? did do the air intake to open
it up a little and maybe you guys have noticed that Ford has installed an air swirling or directing
unit in the air cleaner assy's. at least my 06 5.4 has it. maybe they are on to something. anyone else notice
the swirlygig inside the stock air cleaner ? you have to take it apart a little bit.

 

Throttle body spacers are snake oil. Worthless.

Here are 2 intake mods that may help a bit:

https://www.f150online.com/forums/ar...4l-engine.html

https://www.f150online.com/forums/ar...04-2008-a.html

 

As glc said, snake oil. Completely worthless.

 

did it a while back. thank you !