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Old 09-12-2007, 11:27 AM
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MPG again

I have a 2003 F350 7.3L LWB 4X4, I'm running 295 75R 16 tires, larger, but not really big. My mods are and AFE intake, and a 4" turbo back exhaust, and an ARE bed cover. I don't push it much, and generally keep it under 65mph. I'm getting barely 17MPG, and 12.5MPG when towing my travel trailer(a 30 ft ultralight) I'm pleased with the towing MPG, but I've heard so many say the get about 20MPG unloaded. Is this normal, or should I be getting better? I'm thinking tuner, but haven't gotten one yet.

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Stressed
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Old 09-12-2007, 11:30 AM
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keep driving it. Break it in blah blah you know the story. 17 aint bad i guess... people are getting worse than you lol what do expect... you got a BIG AZZ TRUCK
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Old 09-12-2007, 11:30 AM
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myth busters did a tonneau cover test and they said NO Cover TAIL gate UP is better for MPG than the cover.
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Old 09-12-2007, 11:31 AM
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Also remember unless you reprogrammed for tire size your getting a bit better mileage then your computing
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Old 09-12-2007, 11:35 AM
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A tonneau cover usually helps mpg's...

the mythbusters tested tailgate up/down and with it down was less mpgs.

most trucks seeing 20 mpg also are 2wd - not 4wd - so I'd say you're doing well!
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Old 09-12-2007, 11:39 AM
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Quote:
Originally Posted by lifewitlooie View Post
myth busters did a tonneau cover test and they said NO Cover TAIL gate UP is better for MPG than the cover.
i was just going to say the same thing. i remember in the late 70's everyone was running their trucks with tail gates down to get the extra mpg...

for mythbusters..


P.S. last fill, 17.4 mpg freeway with cruise set at 71 mph, running empty (maybe if i took off the bed cover off i could get 24 mpg)?
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Old 09-12-2007, 11:52 AM
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I have an ARE hard tonneau cover and I swear that I get better mileage on the highway without it. On a trip to the Outer Banks, I averaged around 19 mpg on the highway. Without the cover a few weeks ago, I traveled about 200 highway miles and got a little better than 20 mpg using the same driving methods.

To each his own, this has been my experience.
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Old 09-12-2007, 02:08 PM
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Well my cover was bought for looks and not for MPG. Yes it adds weight, and maybe doesn't help with mileage. The thing is I thought the other mods I have were supposed to help with the MPG and performance. I seem to be getting the same mileage as those with out the exhaust and intake. ?????
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Old 09-12-2007, 02:11 PM
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With your tire size factor in your going 2 mph faster then what your spedometer says, so you actually going farther then what your odometer says.
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