Hypermiling the 3.5.

[Muddy Bean]

Ok, someone run her until empty I’d be tempted...but would
Have to carry a 5 gal can around


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[JExpedition07]

Ok, someone run her until empty I’d be tempted...but would
Have to carry a 5 gal can around


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Not worth it, these modern fuel pumps hate that and sucking in air can kill them. It’s a good idea to fill when you get down to 1/4 tank IMO.

 

[mossback]

Prior to the Expy, when I had Tahoes & Suburbans, the rule was to keep fuel above 1/4 tank if at all possible, especially in the summer.

 

[deweysmith]

Dewey, the big tank size is 34 gallons on the EL.

33.5, I stand corrected!

Though that makes me even more frustrated… why was it running out of gas with at least half a gallon left in the tank?!

 

[Muddy Bean]

33.5, I stand corrected!

Though that makes me even more frustrated… why was it running out of gas with at least half a gallon left in the tank?!

Sloshing? Fuel sloshes away from pickup tube and then you get air? That’s only a guess not knowing how the tank and pickup tube is designed.


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[sjwelds]

Prior to the Expy, when I had Tahoes & Suburbans, the rule was to keep fuel above 1/4 tank if at all possible, especially in the summer.

Yep. My brother-in-law has an 02 or so Tahoe. Last year his wife was on her way here - they live about 3 hr away from the rest of us - and ran it out of gas. Even after a trooper helped her get some gas, it still wouldn't run. After work, I ran up and got it. Took a hammer along and tapped on the bottom of the fuel tank, and it fired right up and I drove it onto my trailer. Actually ran fine for a week or two, but they ended up having to replace the fuel pump.

 

[chuck s]

At what miles-to-empty does the '17 Expedition light the low fuel light? It was at 50 in my '07. 23 gallons is my normal fill when at this point on both trucks. Never ran either completely dry.

Driving conservatively did not increase my travel time on multiple trips from Cleveland to Gettysburg when my daughter went to college there. Running ~65 mph the '07 could get there non-stop and still have a fuel cushion. Running ~75+ required a fuel stop that ended up adding enough time to the trip that it was equal to the more conservative speed. And burned more fuel.

But "I can't drive 65." (Apologies to Sammy Hagar.)

-- Chuck

 

[jeff kushner]

Mine still is running 17.9 accrued mileage since new.....each tank runs around 18-18.2.

My recent concern for oxygenated fuel may have been an over-exuberant right foot....as my mileage has returned.....?!?

I just don't have the patience to hyper it.....too nerve wracking for me.

jeff

 

[J Ski]

I try to drive conservatively due to having larger tires, a lift, and an intake system installed. I keep it between 14-17 city and 17-19 highway which isn’t terrible. Economy and either performance or perf/tow tunes from 5star are next on my list

 

[Muddy Bean]

I’m really wanting a Livernois tune but I’m concerned about the MPG hit. Obviously the extra power will encourage me to utilize it more often but on those trips when budget matters and I’m driving like grandad, will a tune be rough on my MPG?


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[07xln]

I run on the 93 performance tune and if I baby it I can get around 18. That's putting away from a stoplight and keeping it under 70 on the hwy.

Normal driving I average in the 15mpg range city/hwy

As Ive said on here before I have never bought a vehicle in my lifetime based on the fuel mileage it could get. Its just something that's never concerned me. Even when gas was $4-5 a gallon

If you try your hyper whatever you call it I'm sure even with a tune you could still get well into the 20's. Gas mileage is determined by your right foot. Even the biggest most hopped up V8's can get decent mileage if you stay out of the power

But if you do get a tune its hard to stay out of the gas. At least for me it is. I'm still amazed at the difference the 93 performance tune made on my truck over stock

 

[J Ski]

I’m really wanting a Livernois tune but I’m concerned about the MPG hit. Obviously the extra power will encourage me to utilize it more often but on those trips when budget matters and I’m driving like grandad, will a tune be rough on my MPG?


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Just get an economy and performance tune and switch between the two. That’s my plan. I still can’t convince myself to switch to 93 octane bc a lot of ppl say there’s really not a big difference mpg wise, power wise I’m sure there’s a little benefit to 93. I just plan on a straight 87 economy tune and an 87 perf/tow tune from them. That should get me way better numbers than stock, plus if I ever wanna switch to 93 I can just get that tune with their free lifetime tunes

 

[ExpeditionAndy]

It can be done. On a 300 mile 95% hwy trip I was able to get some darn good numbers. But as soon as I had to get off and do some city driving, it dropped off to 22.9 but I held it there for the rest of the day. I had a decent load of audio gear speakers etc a couple of car seats but it was just me as far as passengers. Running 93 octane and cruise set to 60 mph for almost all of the trip except the very end in Indiana. Speed limit was 60 and I dropped cruise to 57 mph. Ambient temp was 25°F.


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I can't drive 55!

 

[07xln]

Just get an economy and performance tune and switch between the two. That’s my plan. I still can’t convince myself to switch to 93 octane bc a lot of ppl say there’s really not a big difference mpg wise, power wise I’m sure there’s a little benefit to 93. I just plan on a straight 87 economy tune and an 87 perf/tow tune from them. That should get me way better numbers than stock, plus if I ever wanna switch to 93 I can just get that tune with their free lifetime tunes

The people saying that aren't tuned. Also the people saying that are cheap. But the 87/93 argument has been beat to death on here lets no rehash it

Here are the 93 perf tune numbers compared to stock. Why in the world would you not pay an extra $10 per tank of gas to get this kind of daily performance?

Also you get 3 tunes so might as well throw the 93 on there in case you decide to give it a go. From the research Ive done the Economy tunes are BS and don't do anything. This was also told to me from a 5 Star tech. He said you're better off just going back to the stock tuning. Also swapping tunes isn't all that easy. I mean its not hard but its about a 10-15 minute process with a lot of key on key off processes and waiting for everything to upload. Do it a couple of times and it will get real old real quick. Youre better off settling on one tune and sticking with it

 

[llhoneymoons]

Haven't tried this with the '16 expy yet, but the first is my '08 Mountaineer & the second is my '00 accord. Didn't run out in either of those pictures. But I did, and I hate this word, literally roll into a parking spot recently with the mountaineer. Tried to take it just a little too far that time.

Like I tell my wife, "There's plenty left."

 

[edizzle]

Just get an economy and performance tune and switch between the two. That’s my plan. I still can’t convince myself to switch to 93 octane bc a lot of ppl say there’s really not a big difference mpg wise, power wise I’m sure there’s a little benefit to 93. I just plan on a straight 87 economy tune and an 87 perf/tow tune from them. That should get me way better numbers than stock, plus if I ever wanna switch to 93 I can just get that tune with their free lifetime tunes

BIG BIG difference between 87 and 93 tunes!!! When You have a factory tune on a car, they have tuned it to work for the cheap bastards that run 87 so that it won’t detonate. When you tune for 93 and commit to running it all the time, they can get much more aggressive with spark and boost pressure.

Also swapping tunes between the two requires a parts swap. At least if the expedition is like the explorer. The 93 performance tune on the explorer required a 3bar MAP sensor. Actually I can’t remember if the MAP was required but I know it was needed to maximize the benefits.

 

[jeff kushner]

The real beauty of digital systems is that compared to analog, they are instantaneous...they actually aren't even close so we deal with sampling time issues all the time but compared to analog they are....so if you keep your foot out of it....gee, where have we heard this before? In one way every engine is identical.....and just like that old 4 barrel.....kick it in the ass every chance you get and you'll pour some fuel through it.....and gentle goes the way of the cheap....

Won't matter what tune you choose...you can get your higher option and drive gently....if you want to.....

not sure why the dyno doesn't show intersection at 5250 but it's early for me, I'm missing something?

jeff

 

[bobmbx]

At what miles-to-empty does the '17 Expedition light the low fuel light? It was at 50 in my '07.

-- Chuck

I believe it complains at 40 DTE. Every other car I've had set the alarm at 50 DTE.

 

[rjdelp7]

When I drive on the highway, I want to get where I am going ACAP. Most drivers go at least 5mph over. There is nothing worse than coming up behind some jackwagon, going 57mph in a 65. It is dangerous and illegal to impede traffic. Slowing down to save gas(hypermiling), waste time. Time is more important the a couple bucks in gas.

 

[JExpedition07]

He didn’t attempt in heavy traffic, he waited for a morning where it was safe to do so.