if i get an aftermarket intake. is it reallly necessary to get a tuner?

 

You've been around awhile andhave even posted in some of the intake threads. Have you not read all that has been said about 2004 5.4s and running lean? Plus, have you not seen where a CAI does minimal good without a custom tune?

 

Here is one:

https://www.f150online.com/forums/ch...rogrammer.html