Notices
1997 - 2006 Expedition & Navigator 1997 - 2002 and 2003 - 2006 Ford Expedition and Lincoln Navigator Discussion

MPG Increase with Mods! Seriously?

Thread Tools
 
Search this Thread
 
Old Feb 20, 2005 | 08:54 AM
  #1  
boatcop1's Avatar
boatcop1
Thread Starter
|
Senior User
Joined: Feb 2005
Posts: 140
Likes: 0
From: on a ROCK
MPG Increase with Mods! Seriously?

I'm the recent new owner of a 2000 EB. I bought the truck primarilly because I will be moving my fam to AK this spring and wanted more room and comfort for the drive.

I recently made a purchase that I'm hopeing will yield me 4-5 MPG overall. I dont even have the truck yet and I bought a GEN II K&N FIPK and a Flowmaster Force II Cat Back. All my parts are on my porch and I'm picking up the truck tommorow night. Whats the best estimate of MPG you think I'll see with these 2 mods if any? I'm not concerned with boatloads of power even though it has the 5.4 my main goal is to get the best milage I can. Has anyone gotten more than 16-17 MPG with a 5.4 4x4 EB?
 
Reply
Old Feb 20, 2005 | 10:22 AM
  #2  
pfogle's Avatar
pfogle
Lead Driver
20 Year Member
Joined: Feb 2003
Posts: 8,140
Likes: 4
From: Oak Harbor, OH
The exhaust will help more than the K&N. the K&N will be better when clean, but if you live in a dust environment you'll have to clean it almost weekly, so you may be better off with a paper filter. I know we got a 2 to 3mpg gain in my '92 E150 with a better exhaust. We used 2.25 pipe right off the converter, and made it exit right in front of the pass. side tire, no muffler. It sounds like a stock car, runs like a raped ape, and get 17mpg at 70mph.
 
Reply
Old Feb 20, 2005 | 11:03 AM
  #3  
the4by4freek's Avatar
the4by4freek
Posting Guru
Joined: Sep 2002
Posts: 1,264
Likes: 0
From: North Carolina
Originally Posted by boatcop1
I'm the recent new owner of a 2000 EB. I bought the truck primarilly because I will be moving my fam to AK this spring and wanted more room and comfort for the drive.

I recently made a purchase that I'm hopeing will yield me 4-5 MPG overall. I dont even have the truck yet and I bought a GEN II K&N FIPK and a Flowmaster Force II Cat Back. All my parts are on my porch and I'm picking up the truck tommorow night. Whats the best estimate of MPG you think I'll see with these 2 mods if any? I'm not concerned with boatloads of power even though it has the 5.4 my main goal is to get the best milage I can. Has anyone gotten more than 16-17 MPG with a 5.4 4x4 EB?
I have a K&N filter in an "open air box" setup. I also have a custom Flowmaster system with a SIDO setup. I also installed a Hypertech chip. My Ex is a 97 with 170,000 on the clock and on my yearly trips from NC to MA I get between 19-21 MPG. This mileage changes depending on where I am in the trip. I go straight through the mountains and usually average 17-18 there. Once out of the mountains I get a consistant 20-21 MPG at 70 MPH. The key to these 5.4's is to keep the RPM's below 2300. You will get great fuel economy if you do this. I have also found that if I drive without cruise control I get better mileage. I can give it just enough pedal to maintain speed without downshifting the trans. I hope this helps!
 
Reply
Old Feb 20, 2005 | 11:30 AM
  #4  
fordborn's Avatar
fordborn
Post Fiend
Joined: Jan 2004
Posts: 6,610
Likes: 2
From: Northwest, Arkansas
Club FTE Silver Member

Have also done both of those mods at one time and I saw about an 2mpg increase under normal driving.

A K&N will still out perform a regular paper filter even in dusty areas but if the area is real dusty you might want a dust cover bag for it.
 
Reply
Old Feb 21, 2005 | 07:27 AM
  #5  
boatcop1's Avatar
boatcop1
Thread Starter
|
Senior User
Joined: Feb 2005
Posts: 140
Likes: 0
From: on a ROCK
Thats great stuff! thanks guys. I should be picking up my Expy tonight! what a day too pck up a new vehicle, snow and cold up here in the northeast
 
Reply
Old Feb 21, 2005 | 10:30 AM
  #6  
PaulC's Avatar
PaulC
Posting Guru
Joined: Sep 2002
Posts: 2,297
Likes: 0
Just be certain that you have the basics covered before you spend too much on aftermarket equipment:

~Tires properly inflated and aligned

~Fresh, clean engine oil of the proper viscosity (less friction)

~Fresh, clean differential(s), transmission and transfer case fluids (less friction)

~Bug and side window deflector-free (hurts aero)
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Bsentman888
1999 - 2016 Super Duty
16
Feb 7, 2012 08:45 PM
DZari
Exhaust Systems
3
Mar 23, 2006 01:29 PM
Ultra Blue
Exhaust Systems
31
Apr 3, 2003 05:20 PM
kwebb
Exhaust Systems
1
May 24, 2002 04:10 AM
hankhankster
1987 - 1996 F150 & Larger F-Series Trucks
10
May 11, 2001 08:38 AM




All times are GMT -5. The time now is 02:14 AM.

story-0
Rezvani's Latest Post-Apocalytic Monster Is a Ford F-150 Raptor Underneath

Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.

By Verdad Gallardo | 2026-05-30 18:33:59


VIEW MORE
story-1
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Slideshow: 10 most expensive Ford trucks ever sold on Bring a Trailer.

By Joe Kucinski | 2026-05-27 16:24:34


VIEW MORE
story-2
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Here's everything that has changed for the latest model year.

By Brett Foote | 2026-05-27 16:17:28


VIEW MORE
story-3
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

By Joe Kucinski | 2026-05-18 19:34:33


VIEW MORE
story-4
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

And it might be even better than that.

By Brett Foote | 2026-05-18 19:26:42


VIEW MORE
story-5
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

Slideshow: Does lowering an F-150 Lobo RUIN the ride quality?

By Michael S. Palmer | 2026-05-18 19:20:37


VIEW MORE
story-6
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE
story-7
10 Best Ford Truck Engines We Miss the Most!

Slideshow: The 10 best Ford truck engines we miss the most.

By Joe Kucinski | 2026-05-12 13:09:47


VIEW MORE
story-8
2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Slideshow: first look at the 810 hp 2026 Shelby F-150 Off-Road!

By Brett Foote | 2026-05-12 12:50:07


VIEW MORE
story-9
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

Slideshow: Everything You Need to Know about the 2027 Super Duty Carhartt Package!

By Michael S. Palmer | 2026-05-07 17:51:06


VIEW MORE