NO chips
Guys on the 87 to 95 5.0 you can play with the timing and buy an adjustable fuel pressure regulator and probably get similar results
On the 4.6 you can get the adjustable gears for the timing and again a regulator! on the 99 and up I beleive (not positive) there is no fuel return so you may need a chip ! but until you get into some serious mods like turbo and blower where you need custom fuel and timing map spend your money elsewhere exhaust, pulleys, gears, tires and your running low 13s