Mileage upgrade for 17 XLT

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16plati

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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?
I didn’t say anything about a phone? I’m lost at what ur getting at here man
 

16plati

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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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Thts because you ordered the 2015-2019 f150 can that apparently attaches to the battery box and is not specific to expedition. In case you are unaware, 15-17 Expeditions share the same pets as 11–14 f150s. This is what you need to attach to the screw on the firewall bc the new style attaches to bolts on the box holding the battery for f150s
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16plati

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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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Don’t know if we have attachment points next to our batteries for this style. Which means you will probably have to return the whole thing because it looks like the hoses are different lengths also. If you have a 15-17 you need to order a catch can for 11-14 f150 with the smaller bracket that goes on firewall
 
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miket961

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Thanks for all the ideas and info here. I started this post because I was getting 18.9 on the highway during a 400 mile trip. I was driving above 75.

Based on suggestions here, I kept it below 75. Also added 91 octane gas. In the end, I was getting 22.3. Very happy with that but don’t mind squeezing more out of it.


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Langer

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

They changed the location from firewall to on top of the battery tray.
 
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jeff kushner

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FWIW, someone might get something from this:
I own a supercharged car, turbo bike and truck.....My '17 expy has 18.3 mileage since the day I drove off the lot 2.5 yrs ago. Typically my tanks today (67K)return around 19.2 or so if I'm not nuts on the pedal.

My SLK was returning 18mpg as well driving 65-75MPH, 50 miles to work. When I slowed to a MAX 60mph & letting the CC select the acceleration(boy was that hard), I got 29.5mpg

My turbo bike...has never been measured for mileage because face it...I LOVE going full bore so who gGAF what the mileage is<lol>!

My truck....nope never forced myself to do the "60 MAX/& letting the CC select the acceleration" test.....but I pretty sure your mileage will extent into the 20's if you have the patience to do it. I drive 46 miles twice a day and I think if I was to slow down a bit, it's close enough to get into the 20's.....but I don't pay for gas so I don't.

jeff
 

Boose

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Thanks for all the ideas and info here. I started this post because I was getting 18.9 on the highway during a 400 mile trip. I was driving above 75.

Based on suggestions here, I kept it below 75. Also added 91 octane gas. In the end, I was getting 22.3. Very happy with that but don’t mind squeezing more out of it.


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Keep it below 75 and use cruise control as often as possible... The ECM seems to not have the same enthusiasm for feeling the turbos like my right foot does :)

I get 23-24 highway in my 19 F150 3.5 with the 10 spd in eco mode & cruise control. My 17 4x4 Expedition EL will get 22-23. I run premium in both and realized a significant increase in mileage over regular.
 

JasonH

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Surprised no one has mentioned tire pressure. Along with that, rate of acceleration, and speed will be the primary determinants of MPG. Because aero on this vehicle is so bad, even a few mph can make a big difference on the highway. Also, a tune can also extract more power from less fuel and may improve mpg if you can keep your feet out of the pedal, at the risk of voiding your warranty.

If you're dropping thousands on a truck and gas for it, the little 10 - 15% you save by driving differently isn't going to make much of a difference. My next daily driver is a used EV, to offset the gas we pump into the Expedition.
 

Joedirtyshirt

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MY SON drove me crazy going 55 mph on Int. 95 getting 24mpg to N.C. I fixed it at 80mph with 18 mpg, I figure it's my truck my gas Love the ride but 6,000 lbs needs to speed and put some plugs in it change filter and enjoy the ride, after leaving the Taurus wagon at 24 mpg not much of a sacrifice 8 people got sound and room to stretch out, I'll give the 6 mpg away any day, by the wat I paid for it and rode 3rd row to N.C. between 2 car seats and was never uncomfotable
 

Steve Hartman

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How can I boost my mileage?

Don't laugh, but I saw a gizmo on Facebook that said it would increase mileage after plugging it in to your OBD2 port. It only cost $19.95.

Went to Ebay and found the same device for $5 if I bought from China. LOL! It's called ECO OBD2. And quoting John Popeil, the huckster from about three decades ago, "And it really, really, works!"

I'm getting about 2 MPG more than I used to, and I don't notice any difference in performance.
 

jeff kushner

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Remember the "Turbonator" The jagged toothed piece of sheet metal that was supposed to be mounted above the carbs?

They claim that even in FI engines, the "swirl" created at the Air intake will carry all the way into the combustion chamber.................

You should get a 10% increase if the Jeep they used as an example got a 41%increase<LMAO>!!

jeff



Did they not make the FLOWBIE????
 

HawkX66

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I drive an SLK350 and my 17 Expedition to work. 133 miles one way. The SLK gets up to 27 MPG and the gets up to 20. The big difference between the two is the Benz takes super and I run regular in the Expy. Some quick arithmetic shows a $3 to $6 difference over 300 miles. I would never run super to gain only a possible mpg or two. The cost benefit just doesn't add up. A whopping $4.09 in this scenario.

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Boose

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I drive an SLK350 and my 17 Expedition to work. 133 miles one way. The SLK gets up to 27 MPG and the gets up to 20. The big difference between the two is the Benz takes super and I run regular in the Expy. Some quick arithmetic shows a $3 to $6 difference over 300 miles. I would never run super to gain only a possible mpg or two. The cost benefit just doesn't add up. A whopping $4.09 in this scenario.

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It's not just the economy... the Ecoboost is a different animal with Premium. The economy is nice, but the power is just as nice when I have to get on her.
 

JExpedition07

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It's not just the economy... the Ecoboost is a different animal with Premium. The economy is nice, but the power is just as nice when I have to get on her.

I’ve heard the same thing with the 5.0, that it’s like a totally different engine on premium or E-85 fuels. Must be the newer dual timing systems.
 
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JasonH

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I’ve heard the same thing with the 5.0, that it’s like a totally different engine on premium or E-85 fuels. Must be the newer dual timing systems.

E85 has higher resistance to detonation and so can run with increased compression, boost, or timing. However, it also has less energy content, so mpg is reduced substantially. Federal manufacturers were getting a credit for making E85 compatible engines, but it never really made sense to use it unless you were in an area where it was dirt cheap. Here's a test from Edmunds claiming a 25% hit to mpg using E85 vs gas.

https://www.edmunds.com/fuel-economy/e85-vs-gasoline-comparison-test.html
 

Boose

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The knock sensors are very sensitive. The timing as well as the realized boost are adjusted based on the octane. Not sure if the waste gate is used...? There is an audible increase in the turbo's when I get on it with Premium Vs. Regular.
I'm sure the 5.0's are similar with regards to the timing.
 

16plati

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The knock sensors are very sensitive. The timing as well as the realized boost are adjusted based on the octane. Not sure if the waste gate is used...? There is an audible increase in the turbo's when I get on it with Premium Vs. Regular.
I'm sure the 5.0's are similar with regards to the timing.
I believe that sound you hear is due to the computer self tuning ability to increase certain ECU parameters when higher octane fuel is sensed. Aka more boost is made so you hear the whistle a little more. Take those stupid air silencers out of the intake tubing and you’ll hear them even a little more
 

Boose

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I believe that sound you hear is due to the computer self tuning ability to increase certain ECU parameters when higher octane fuel is sensed. Aka more boost is made so you hear the whistle a little more. Take those stupid air silencers out of the intake tubing and you’ll hear them even a little more

Agreed, the ECU is definitely allowing more boost, just not sure how :)
 
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