How many mpg's are u guys getting in 5.4 superduty - Page 7 - Ford Truck Enthusiasts Forums



How many mpg's are u guys getting in 5.4 superduty

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  #91  
Old 04-08-2012, 10:07 PM
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Well it not looking good on me getting the truck. The money is just not coming up. So I'll be sticking with my dent side.
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  #92  
Old 04-10-2012, 01:19 PM
E30tdf E30tdf is offline
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Geez....I don't feel so bad now seeing this data. No need to upgrade to newer models, you would never make back the initial cost. My 86 4x4 F250 with a carbed 7.5 does 9 mpg and so does my 12,000 lb Class C motorhome with the EFI port injection. I'm talking highway miles of course.
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  #93  
Old 04-12-2012, 03:53 AM
Grantman Grantman is offline
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Mines not an SD but my '06 SCab, 6.5' bed 5.4 3V, 3.73 rear, 265/70R17, 3" single ex, Volant CAI, and Edge Evolution gets about 13.5 in town, and about 17.8 if all highway. 77K miles and I drive like a country boy (both feet flat on the floor)
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  #94  
Old 04-21-2012, 02:02 PM
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02 E350 van, 5.4l, usually about 11, last trip included lot's of 70-75 interstate and still got 11. I do a lot of idling though, charging batteries, heating and cooling it since it's somewhat of a camper van at this point. Just bought a Scanguage so I'm hoping to monitor it more closely.
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  #95  
Old 04-23-2012, 12:46 PM
fordfarmer12 fordfarmer12 is offline
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Quote:
Originally Posted by Grantman View Post
Mines not an SD but my '06 SCab, 6.5' bed 5.4 3V, 3.73 rear, 265/70R17, 3" single ex, Volant CAI, and Edge Evolution gets about 13.5 in town, and about 17.8 if all highway. 77K miles and I drive like a country boy (both feet flat on the floor)

Grantman, how do you like that Edge tuner? Could you notice a big difference in power and fuel econonmy?
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  #96  
Old 05-06-2012, 12:33 PM
FordDip FordDip is offline
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I'm getting about 18 on the highway. 12 in the city if my foot is easy on her . Got my '08 superduty 5.4L from Texas Direct Auto and a few days later put a K&N CAI and tuned with DiabloSport Predator. Magnaflow Dual Exhaust is on now and next is a high flow cat. Definitely satisfied with performance and MPG .
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  #97  
Old 05-30-2012, 12:08 PM
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I am new and just got my truck a year ago.. I get 18 highway and 16 city. It is lifted 9 inches with 355/60R20 nitto terra grapplers. it has the 355 gears, cold air, electric fan conversion, exhaust and manual locking 4x4 hubs. it has been a great investment for me. i tow ocasionally but not often..
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  #98  
Old 05-31-2012, 05:06 AM
Grantman Grantman is offline
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Quote:
Originally Posted by fordfarmer12 View Post
Grantman, how do you like that Edge tuner? Could you notice a big difference in power and fuel econonmy?
I LOVE it!!!
When first installed it felt like I dropped a bigger engine in, instantly went up about 2 - 4 MPG. I also noticed that it accelerates madly! I'm getting 0-60 in 6.76 which ain't shabby for a pickup. I drive like a country boy (both feet flat on the floor!) and I still get better mileage than babying a stock truck ( I drive one just like mine at work sometimes and it only gets about 10.2 on a good day. All in all it's the best mod I've done as far as effect for the dollar. That said, if I had to do it again I would have started with a Gryphon, it's an Evolution that's been modded to have more than 3 settings (like mine only has Economy, Towing, and Extreme), plus their custom tunes are cheaper, they also take a little longer to get it back to you, but worth the wait. Now I have to send mine in to have it upgraded into a Gryphon, that's gotta wait until my Harley's back on the road - I'll save enough in gas every month to pay for more mods.
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  #99  
Old 05-31-2012, 07:47 PM
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The truck in my Sig gets 12 city 14 hwy. I gues the 4.10 gears and manual trans helps with the 35's. Also its a reg. Cab with a fresh 5.4l.
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  #100  
Old 07-28-2012, 11:24 PM
schwefel schwefel is offline
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I have a 2002 F-250 with just shy of 200k with the 5.4. I am the third owner. Original owner, and most of the miles, was a fleet operator.

I drove from Milwaukee to Minneapolis a few weeks ago. I hit just shy of 14.5 mpg. From a practical standpoint, the entirety of the trip is interstate. I averaged, other than construction zones, around 72 mph with significant fluctuations in speed. (Cruise needs to be fixed.)

The truck has a small life and much larger than stock tires. Other than that it is stock.
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  #101  
Old 07-30-2012, 03:31 PM
Gravesdigger Gravesdigger is offline
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13-15 unloaded.
Never less than 11 loaded. I tow about 5700lbs
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  #102  
Old 08-25-2012, 10:43 PM
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Now I don't feel so bad. I have a E350 15ft box truck,5.4,only mod is K&N air filter empty(9000lb) or with a 3000lb load. If I keep in under 65mph I get 12mpg,but never drop below 9mpg and that doing 75 to 80 loaded.
I'm think of taking the cat off and running a straight pipe anybody have any input?
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  #103  
Old 08-26-2012, 08:34 PM
lbrjet lbrjet is offline
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Quote:
Originally Posted by Superduty872 View Post
2008 F250 XLT 5.4 3.73 4x4 SC SB

city 10-13
Interstate 14-15 @ 65-70
highways 16-17 @ 55
Same truck but 2010 and the exact same numbers. 26K miles
Averaged 9.15 towing my 8200lb travel trailer 4700 miles last summer.
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  #104  
Old 09-13-2012, 05:22 PM
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Ethanol make a big difference in MPG.

Ethanol make a big difference in MPG. I see a good 3 MPG bonus if I get real gas. Mine is a v10 so I will not say what I get.

You need to look at when comparing MPG.
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  #105  
Old 09-13-2012, 07:57 PM
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12 city... sometimes... kinda
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