Would this K and N intake require any mods to our trucks (5.4 Triton)? It's the Fuel Injection Performance kit so I am not sure. It boasts a 15 HP gain. It's that or the metal iintake with a 9 HP gain. Any suggestions for this one or the equal AF1?

Thanks,

 

I would go with the AF1 myself.

 

Agreed! According to Troyer Performance testing the AF1 gives a 25 HP gain.