2011 6.7 having fuel mileage problems - Ford Powerstroke Diesel Forum
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post #1 of 4 Old 04-16-2014, 05:08 PM Thread Starter
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2011 6.7 having fuel mileage problems

I have a 2011 F250 6.7 that has been completely deleted. It has EGR delete, dpf delete, and def delete. I have an H&S Mini Max on my truck. I was getting any where from 18-25 mpg. In the last 3-4 months it has been getting 12.5 to 14.5. Everything is set up the same on the truck as when i was getting 18-25. I thought maybe the cold weather had something to do with it but last winter i was getting 18 mpg all winter long. I dont think the cold weather had anything to do with making it drop that much. There isnt any codes on the truck. Has anyone else had this problem. If anyone has any ideas i would be interested in hearing them.

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post #2 of 4 Old 04-20-2014, 09:53 AM
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How old are the filters?

Stock for now.
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post #3 of 4 Old 04-20-2014, 03:41 PM Thread Starter
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It's not the filters that was first thing I changed when I started having the problem. I'm thinking I could have a bad injector or a couple of them
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post #4 of 4 Old 04-20-2014, 06:12 PM
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I have a 2013 (see sig) and I'm deleted. Before delete I was getting about 13 city. After delete I am getting 14.5 to 15 city. I have it on the HS tow tune with low boost turned all the way down.

Hope it is not a injectors cause I might have some bad one too and I only have 6900 miles on my truck now.

2013 Lariat F250 CCSB 6.7, 4X4, 3.31 locking rear, 50 Gal Titan Tank, 275/70r18 Duratrac Tires, Edge Insight CTS, Bilstien 5100's all around, Dieselsite fuel/water separators. To Come: Race HS XRT Pro
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and a hollowed/straight piped DPF/SCR from a donor vehicle
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