Waking up 5.4 on '04 Expedition?
 

I just recently purchased an '04 Eddie Bauer Expedition. Even though I wanted atleast an '05 to get the 3 valve motor, I got such a good deal on this '04 I went for it. So now I'm trying to waking it up some and gain alittle mileage as well. I realize you don't buy an Expedition for mileage. I have installed an open air intake, and after cat exhaust since I couldn't do true duals. The truck does run alittle better, but I'm wanting some opinions on what you guys think? Plugs and coils? Any help would be great.

-Funkster-

One of the tuners will be the best money spent.

Efans worked great. Add some noticiable power and I get about 2mpg better mileage. Got almost 21mpg on my last trip.

Rob
2000 Expy 5.4 w/ 88k

Where do I purchase this? How much torque and hp does it add? Do you have to run premium fuel? Thanks.

-Funkster-

Why wake it up? I know the top end stinks a little bit, but it will tow 8,000 pounds doing 80 no problem. My mom has the same vehicle and its not a scorcher, but what did you expect when buying a 4x4 boat hauler?

What do you guys think of those iridium plugs? Anyone used them? Does MSD make any coils for these 5.4?

-Funkster-

Anybody else have any info or ideas? Thanks.

-Funkster-

I second the tuner.

What kind of tuner?

-Funkster-

definitly go with the tuner (hypertech or edge, its just personal preferance) and i like throttle body spacers. in combination with the intake and exhaust the throttle body spacer will add some throttle response. plus it gives you the whistle that a turbo would give you just not as loud.

So you guys like throttle body spacers? When I use to be on this site a few years ago, they said those things didn't work. Do alot of guys on here use them? Are they hard to install? Thanks for the info. I really appreciate it!

-Funkster-

dont waste ur money on a throttle body spacer...i had on on my truck and i lost power and got worse gas mileage...i took it off and noticed more power and better mileage...the only thing its good for is a good paperweight...and i think most people on the site will tell u the same thing...

check this out:
https://www.f150online.com/forums/sh...d.php?t=270674

That's what I remembered hearing on here a few years ago. Nothing more than an expensive paper weight. What about these new iridium plugs and coil packs?

-Funkster-

TB spacers are useless.