How to upgrade a 2003 ford f150 Harley Davidson?

I own a 2003 f150 Harley Davidson edition. It has a 5.4L supercharged engine. Now dont get me wrong it has plenty of power but I want a little more. I dont want to get a programmer because I have been told that they wear the engine and mainly the supercharger down alot quicker and put unwanted stress on the engine. I just want to know what performance mods I could get that wouldn't put to big of a dent in my wallet but give me that extra power.
 
get a nice cold-air intake for it and some nice exhaust if it doesn't already have it. Really the easiest next step would be to go down to a slightly smaller supercharger pulley. This will increase the speed of the supercharger and bump boost up, thereby making more power.

oh, and you could also get an underdrive pulley setup, which will slow down your accessories a little and free up a couple of HP.
 
Back
Top