Fuel Mileage Decreasing??? - Ford Powerstroke Diesel Forum
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post #1 of 10 Old 05-04-2013, 03:15 PM Thread Starter
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Fuel Mileage Decreasing???

When I first got my truck last October it had about 12,000 miles on it, I would averaged about 15.7mpg driving around town. Now I'm at about 25,000 and I can't get above 14.4. Has anybody else ran into this problem? My truck also seems to regen a lot more frequently now, and my driving style is still that of a grandpa. I'm very easy on the petal, and typically drive pretty slow in town. One last question, what are some of y'all seeing that have gone ahead and deleted your trucks?

Tuxedo Black 2011 F-350 Lariat CCSB Loaded with everything. 4" BDS with Fox Shocks on Chrome 20x12 Fuel Throttles on 35" Fuel M/T's, double limo tint on the rear windows, and 25% on the front, AFE Stage II Intake, H&S Race Tuner, 5" Flo Pro.
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post #2 of 10 Old 05-04-2013, 04:12 PM
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Mine is around 8,500 miles now and been deleted for 2,000 or so. I was averaging around 18.5 or so highway and have gained about 1-1.5 mpg. Runs alot better. I get prolly 17.7-9 for average city and highway mixed. I have 3.55 gears and spartan 200 tune with 5" exhaust.

2012 F-350 CC SB Sterling Grey 4x4.... Flo-Pro 5", Spartan Warhammer....

Too Come.. lift, wheels, tires
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post #3 of 10 Old 05-04-2013, 04:27 PM
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17.8 with 35's. that's calculated not lie o meter. B4 deleting ( mm & 5" mbrp & s&b cai) I noticed same thing but if I went fast I would regen less. And I run the stock or no power tune 99% of time. Everyone keeps telling me to run hot and I'd get better mpg's.


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leveled 2011 F250
Fox 2.0 Shox
35x12.50x20 Toyo AT II's
20x9 Fuel Dunes
H&S MiniMaxx
5" MBRB 7"Tip
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post #4 of 10 Old 05-04-2013, 04:37 PM
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Lf83, that's good report having 35" tires. I'm adding some in September. And hoping I get the same.

2012 F-350 CC SB Sterling Grey 4x4.... Flo-Pro 5", Spartan Warhammer....

Too Come.. lift, wheels, tires

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post #5 of 10 Old 05-04-2013, 07:36 PM Thread Starter
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Quote:
Originally Posted by Pjosh6 View Post
Mine is around 8,500 miles now and been deleted for 2,000 or so. I was averaging around 18.5 or so highway and have gained about 1-1.5 mpg. Runs alot better. I get prolly 17.7-9 for average city and highway mixed. I have 3.55 gears and spartan 200 tune with 5" exhaust.
That sounds great! I have the 3.31 gears in mine, but I also have 35" Toyo's so hopefully I will be able to see about the same as you. My goal for this truck whenever I do end up deleting it is to have it run as efficiently as possible.

Tuxedo Black 2011 F-350 Lariat CCSB Loaded with everything. 4" BDS with Fox Shocks on Chrome 20x12 Fuel Throttles on 35" Fuel M/T's, double limo tint on the rear windows, and 25% on the front, AFE Stage II Intake, H&S Race Tuner, 5" Flo Pro.
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post #6 of 10 Old 05-04-2013, 08:50 PM
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I think your doing okay for your fuel considering the 35" tires.. Did you have your computer calibrated after adding the larger tires? If you delete with your 3.31 gears I think you should do pretty well on mpg.

2012 F-350 CC SB Sterling Grey 4x4.... Flo-Pro 5", Spartan Warhammer....

Too Come.. lift, wheels, tires
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post #7 of 10 Old 05-04-2013, 09:26 PM Thread Starter
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No, I need to have that done next time I'm at the dealership, that and my TPMS. I always forget to have them fix that whenever I'm over there.

Tuxedo Black 2011 F-350 Lariat CCSB Loaded with everything. 4" BDS with Fox Shocks on Chrome 20x12 Fuel Throttles on 35" Fuel M/T's, double limo tint on the rear windows, and 25% on the front, AFE Stage II Intake, H&S Race Tuner, 5" Flo Pro.
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post #8 of 10 Old 05-05-2013, 12:16 AM
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what are you talking about when you are saying the it has been ''deleted?''
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post #9 of 10 Old 05-05-2013, 12:19 AM Thread Starter
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Quote:
Originally Posted by NOSPKPLGS! View Post
what are you talking about when you are saying the it has been ''deleted?''
The DPF, DEF, EGR, and the catalytic converter. Basically get rid of all the crap that kills these motors.

Tuxedo Black 2011 F-350 Lariat CCSB Loaded with everything. 4" BDS with Fox Shocks on Chrome 20x12 Fuel Throttles on 35" Fuel M/T's, double limo tint on the rear windows, and 25% on the front, AFE Stage II Intake, H&S Race Tuner, 5" Flo Pro.
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post #10 of 10 Old 05-05-2013, 06:10 AM
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I would say that if you haven't calibrated your speedometer then your mpg are different than the truck computer. Unless your calculating with a GPS.

2012 F-350 CC SB Sterling Grey 4x4.... Flo-Pro 5", Spartan Warhammer....

Too Come.. lift, wheels, tires
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