Mileage upgrade for 17 XLT

[miket961]

Hi All, new to this forum but have been in other forums. First time Expedition owner (love it).

How can I boost my mileage? I see varying info about replacing some air filters and maybe the exhaust. Other info on updating the computer but the websites I fount seemed sketchy.

TIA


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[miket961]

I should add that I purchased my expedition 1 week ago. Has 43k miles. Took a 400 mile trip on the highway and couldn’t get it to budge above 19.2. I quickly found out cruise control does worse at 18.9


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[16plati]

I should add that I purchased my expedition 1 week ago. Has 43k miles. Took a 400 mile trip on the highway and couldn’t get it to budge above 19.2. I quickly found out cruise control does worse at 18.9


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Welcome!

Welcome!

Congrats on purchasing a 6100lb anchor! You aren’t gonna see great gas mileage in these cinder blocks. For starters, change the oil to full synthetic 5W30 and get yourself a jlt performance catch can to stop the blow by that’s going to continue building up in your engine. Take all three MAP sensors out and spray them with CRC MAF cleaner or replace if they are really discolored after cleaning. Air intake system vs new filter: new system only gonna be beneficial if you tune it (which is what I did). Please DO NOT mess with the exhaust. They sound horrible, Ive tried 3 different mufflers on a full 3” system, back to stock every time. And run 93. I get 25-28 real-time mpg on highway and I’m tuned, lifted, 4WD with 35s

 

[Iamsam1117]

19.2 is GREAT gas mileage for a 7,000lb vehicle with a beefed up V6...

I see you run a 2017 so you've got the same engine setup I've got.

Bout the only starting suggestion I have is a tuner but it willgive you better performance and similar or worse gas mileage

 

[miket961]

Welcome!

What year we talking about here?

2017


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[bobmbx]

Hi All, new to this forum but have been in other forums. First time Expedition owner (love it).

How can I boost my mileage? I see varying info about replacing some air filters and maybe the exhaust. Other info on updating the computer but the websites I fount seemed sketchy.

TIA


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http://www.istorytime.com/wp-content/uploads/2018/03/smart-2959343_1280.jpg

If you're concerned about mileage, why did you buy a 6k# box?

 

[bobmbx]

I should add that I purchased my expedition 1 week ago. Has 43k miles. Took a 400 mile trip on the highway and couldn’t get it to budge above 19.2. I quickly found out cruise control does worse at 18.9


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Thats not bad. There is a huge fuel penalty with these trucks between say, 65mph and 75mph. HUGE.

 

[JExpedition07]

My standard length used to average 16 MPG, my current EL 5.4 Triton averages 15 MPG combined. Both average about 18 MPG on the highway. They aren’t fuel efficient vehicles the curb weight is around 6,000 pounds, combine that weight with a substantial V8 or turbocharged V6 to move said weight and it’s a recipe for drinking gas.

Honestly the best way to save on gas is to drive slower and keep it below 70 on the highway. Also taking routes with less stop and go would help.

 

[miket961]

Thats not bad. There is a huge fuel penalty with these trucks between say, 65mph and 75mph. HUGE.

Thanks. I did notice that as I stayed above 75


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[miket961]

Welcome!

Welcome!

Congrats on purchasing a 6100lb anchor! You aren’t gonna see great gas mileage in these cinder blocks. For starters, change the oil to full synthetic 5W30 and get yourself a jlt performance catch can to stop the blow by that’s going to continue building up in your engine. Take all three MAP sensors out and spray them with CRC MAF cleaner or replace if they are really discolored after cleaning. Air intake system vs new filter: new system only gonna be beneficial if you tune it (which is what I did). Please DO NOT mess with the exhaust. They sound horrible, Ive tried 3 different mufflers on a full 3” system, back to stock every time. And run 93. I get 25-28 real-time mpg on highway and I’m tuned, lifted, 4WD with 35s

What tuner did you use?

Do you have a link for the JLT catch can? Went to their site and couldn’t locate one for the 2017 Expedition unless the f150 ecoboost works the same


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[16plati]

What tuner did you use?

Do you have a link for the JLT catch can? Went to their site and couldn’t locate one for the 2017 Expedition unless the f150 ecoboost works the same


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Yes it’s the f150 catch can. Also, I have an sct x4 with 5 star tuning 93 perf and 93 perf/tow tune

 

[Langer]

What tuner did you use?

Do you have a link for the JLT catch can? Went to their site and couldn’t locate one for the 2017 Expedition unless the f150 ecoboost works the same


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I got this one:

https://www.stage3motorsports.com/J...coBoost-JLT-Oil-Separator-Passenger-Side.html

 

[cmiles97]

It's eco or boost your choice. Going slower does help. I see a huge difference doing 55mph on backroads than doing 75 on the highway. I am averaging 19.7mpg over the last 3K miles but most of it is congested highway which slows me down, some stop & go but mostly just 45mph & slower then 75-80 where I can. I use 93 octane. No towing during that time.

I have a 17 XLT XL 4x4 all stock.

I averaged just under 15mpg with my 2007 Sequoia. So these Ecoboosts are the real deal.

The redesigned ones have 10 speed automatics vs our 6 with a redesigned motor. Many are averaging much higher than me. I talking stock ones. Tuning can do much better.

 

[miket961]

I’m on my way back from my trip and currently running 21.7

Filled with 91 octane and keeping it under 75


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[mquick5]

Yes it’s the f150 catch can. Also, I have an sct x4 with 5 star tuning 93 perf and 93 perf/tow tune

But you have to make sure they know it's for a expedition, or the new f150 mounting bracket won't work.

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[powerboatr]

It's eco or boost your choice. Going slower does help. I see a huge difference doing 55mph on backroads than doing 75 on the highway. I am averaging 19.7mpg over the last 3K miles but most of it is congested highway which slows me down, some stop & go but mostly just 45mph & slower then 75-80 where I can. I use 93 octane. No towing during that time.

I have a 17 XLT XL 4x4 all stock.

I averaged just under 15mpg with my 2007 Sequoia. So these Ecoboosts are the real deal.

The redesigned ones have 10 speed automatics vs our 6 with a redesigned motor. Many are averaging much higher than me. I talking stock ones. Tuning can do much better.

thats funny
i easily squeeze 19 plus at 75 and above .
cracks me up.
i think its flying and has less drag
this was at 77 for over 50 miles

 

[16plati]

But you have to make sure they know it's for a expedition, or the new f150 mounting bracket won't work.

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Nope, wrong. I went to them in person with my expedition and told them what I wanted. Gave me the f150 can and hardware. Installed it perfectly in their parking lot with them. Zero issues

 

[mquick5]

Nope, wrong. I went to them in person with my expedition and told them what I wanted. Gave me the f150 can and hardware. Installed it perfectly in their parking lot with them. Zero issues

Without pictures this post is worthless. And my guess if you went to them in person they knew you had an expedition. There is no way the new F-150 bracket will work. Does yours attached to the battery tray or the firewall? Photo below of new F150 battery box bracket, which is clearly way to tall for hood to close. But idk they may have revised it, and made it shorter since I ordered mine a couple months or so back.


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[bobmbx]

Nope, wrong. I went to them in person with my expedition and told them what I wanted. Gave me the f150 can and hardware. Installed it perfectly in their parking lot with them. Zero issues

So, they knew you had an Expedition when you said "I want a catch can for my Expedition"

Why is it wrong to say that on the phone?

 

[16plati]

Without pictures this post is worthless. And my guess if you went to them in person they knew you had an expedition. There is no way the new F-150 bracket will work. Does your ears attached to the battery tray for the firewall? Photo below of new F150 battery box bracket, which is clearly way to tall for hood to close. But idk they may have revised it, and made it shorter since I ordered mine a couple months or so back.


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Got mine 2 years ago and looks NOTHING like that. Sorry but not sure what part you have there