I have 06 F-150 FX4 5.4 L with Roush Dual Exhaust, Edge Evolution Programmer in Performance #3 Program, The AEM Brute Force Intake And Two Inch Leveling Kit. Have Good Power Now, However Still Looking For More. Anyone Have Any Suggestions? Throttle Body Spacers? Headers? Any Help Would Be Most Appreciated.

 

High flow intake and exhaust are your best bang for your buck.

 

Blower

 

As stated numerous times, TB spacers do nothing for power. They make a cool whistle, but that's about it.

 

underdrive pulleys and e-fans

 

"twin screw it" Heck its just money

 

Try fuel and ignition system upgrades,gearing, and slap a charger on it!!!!