F550 6.4L. Need better mileage! - Ford Powerstroke Diesel Forum
 
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post #1 of 10 Old 10-15-2011, 01:36 PM Thread Starter
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Red face F550 6.4L. Need better mileage!

Stock truck. It hauls 16k lbs on pintle all day, 7mpg. 08 w 32k miles. What should I do to bulletproof and improve my fuel economy. Low cost to higher cost please. Thanks
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post #2 of 10 Old 10-15-2011, 01:41 PM
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Remove emmissions which you have to tune in order to keep the truck running right, and I'm not sure what else on a 6.4


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post #3 of 10 Old 10-15-2011, 01:41 PM
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Quote:
Originally Posted by dcgreen88 View Post
Stock truck. It hauls 16k lbs on pintle all day, 7mpg. 08 w 32k miles. What should I do to bulletproof and improve my fuel economy. Low cost to higher cost please. Thanks
tune it.........$900 to $1800......one year payback in fuel savings possible


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post #4 of 10 Old 10-15-2011, 02:54 PM
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Call the guys at Performance truck products, they'll hook you up and answer any questions you have!!

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post #5 of 10 Old 10-15-2011, 07:38 PM
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Yea I just bought an 08 f450 crew cab xlt with a cm flatbed. Truck is stock other than k&n drop in filter. I'm pullin a 40ft float with 12,500lbs trailer is 10k empty. I'm headed to Va from TX I'm only getting about 6mpg.

Any help would be nice. I plan on doin something when I get back monday. Thanks for the help in advance
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post #6 of 10 Old 10-15-2011, 10:50 PM
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It won't matter if your tuned, towing those kind of loads won't result in huge increases of mileage. You have several things against you; friction from tires, weight of truck alone not counting loads, and gearing in the truck.

Heck, even unloaded, some of the f450's have barely squeaked by with a 2mpg increase, some users have even reported no increase.

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post #7 of 10 Old 10-16-2011, 12:51 PM
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Most people I'm talking to say there still getting 8 to 10 mpg when I'm barely getting 6 mpg.
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post #8 of 10 Old 10-16-2011, 02:03 PM
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Gearing in the 450's and 550's is one of the biggest things holding you back. Like was said tuning it should net you a good increase but not always in those big trucks. 16k on a pintle is a pretty good load to be hauling around. You can figure that combined weight of whats in tow and truck is 24k or over. Thats a big load.

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post #9 of 10 Old 10-16-2011, 02:35 PM
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Quote:
Originally Posted by banks7.3 View Post
Most people I'm talking to say there still getting 8 to 10 mpg when I'm barely getting 6 mpg.
Are these people you work with or know or people on the web? Do they have the exact same truck as you; year, model, specs, height, weight and loads? Do they drive the same routes, same amount of highway vs city, flat terrain versus hilly terrain as you? All these factors can result in increases or decreases in mileage unfortunately.

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Last edited by smotrs; 10-16-2011 at 02:39 PM.
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post #10 of 10 Old 10-16-2011, 07:52 PM
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If your worried about the possible legal issues with the dpf delete your best bet is a Gearvendors overdrive. The weight and gearing of the f550 is whats really killing you( what is your rear end 4.88?), pulling my 38' 10-12k gooseneck cargo trailer on mostly interstate gets 8-9 depending.

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Please collect and message me Shell, Rotella oil cap codes aka "my miles matter" I'm trying to save up for a hat or something.

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