7.3 fuel milage issues - Ford Powerstroke Diesel Forum
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post #1 of 4 Old 01-03-2013, 08:01 PM Thread Starter
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7.3 fuel milage issues

I have a 1999 ford f350 dually 4x2 with 7.3 with street tires and 172500,0 miles. 411 gears automatic transmission. I have added a bullydog power pup programer at setting towing/ecomy. I have had to replace number 8 injector and number 7 injector. The truck is a daily driver and it runs better now but i only get 16mpg and expected better. What else can I do? I have heard of guys getting up to 22-25 mpg. Is this really possible for my truck? Thanks, Kenny.
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post #2 of 4 Old 01-03-2013, 08:20 PM
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22 or 25 is not even close to realistic in the truck you are driving. 16 is actually damn good. Ditch that POS bully dog and get some custom tunes. Php, beans, tony Wilman etc. Much better tuning.


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2001 F-250 Lariat CCSB, 4x4, ZF6 249k, 6.5" Procomp lift, 37" Toyo M/T's, 20" Fuel Hostages. PIS 160/30's, PHP Hydra, 6637, 4" exhaust, Tank mods, ISSPRO's, 08+ mirrors/tailgate/tail lights, M12000 winch.



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post #3 of 4 Old 01-03-2013, 08:24 PM
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How did you do your diy intake. short version good enough.
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post #4 of 4 Old 08-08-2015, 10:51 PM
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I am losing my fuel milage in my 2001 f350 crew cab diesel. It has 311598 miles it was getting 17 mpg and now getting 15 mpg. I did a 4 inch from turbo back. Other then that it's all stock. Don't know what's going some help would be great
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