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Old Jan 1, 2009 | 06:25 PM
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More MPG

What can be done to a 7.3 to improve fuel mileage before fuel prices increase again? 2000 F350 dually, 6SP, 140K. This year new PCM, 2 new CPS, 1 new 3rd inj., Bully Dog 2 years. Thanks
 
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Old Jan 1, 2009 | 06:41 PM
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What are you getting now? You can get better tunes that will help. Not the Bully Dog, but custom tunes, DP-TUNER. The 7.3 is an incredible engine, you just need to know how to massage it.
 
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Old Jan 1, 2009 | 06:55 PM
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Check for boost leaks as suggested by Chris is Post #9 of your other thread.

Also check that you don't have a clogged tube going to the EBPS. This is the link for cleaning the tube but it doesn't seem to be working right now. http://guzzle.rbmicro.com/epbs.html

Here is a link that alks about EBPS. LINK
 
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Old Jan 1, 2009 | 09:08 PM
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All of the above, plus keep your foot out of the pedal.. Keep you tac around 1900..
My dually doesn't get very good mpg either.. empty about 15.. pulling a 6000 lb load, about 11..
 
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Old Jan 2, 2009 | 06:46 AM
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Originally Posted by clintbonnie
All of the above, plus keep your foot out of the pedal.. Keep you tac around 1900..
My dually doesn't get very good mpg either.. empty about 15.. pulling a 6000 lb load, about 11..

Yup. Actually on hwy 1900 is about 65MPH. Set cruise. Locally I shift sooner and run around 14 - 1600 RPM. I will eventually get 4 inch exhaust. Thanks!!!
 
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Old Jan 2, 2009 | 08:12 AM
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Originally Posted by All Diesel
Yup. Actually on hwy 1900 is about 65MPH. Set cruise. Locally I shift sooner and run around 14 - 1600 RPM. I will eventually get 4 inch exhaust. Thanks!!!
what size tire are you running?At 65 I'm turning about 2200
 
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Old Jan 2, 2009 | 10:05 AM
  #7  
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Originally Posted by All Diesel
What can be done to a 7.3 to improve fuel mileage before fuel prices increase again? 2000 F350 dually, 6SP, 140K. This year new PCM, 2 new CPS, 1 new 3rd inj., Bully Dog 2 years. Thanks
What everyone has said, plus you might want to read the Cummins white paper I just posted to our website (look at the bottom of the Guides section on this page).
 
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Old Jan 2, 2009 | 11:04 AM
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Bob (guzzle) fixed the link to EBPS tube cleaning and it is now working.

Welcome to guzzle's Exhaust Backpressure Sensor Cleaning Maintenance Web Page
 
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Old Jan 2, 2009 | 12:49 PM
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Originally Posted by rbaker6336
what size tire are you running?At 65 I'm turning about 2200
I'm guessing you have a 4.10 rear end. Isn't that typical on the duallys?

I have 3.73 and 285-65 16's and I think I turn about 1700 at 65.
 
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Old Jan 2, 2009 | 01:07 PM
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With my 7.3 F-250, Crew with Hyper-tech tuner in stage 3, standard tires and 3.73 rear, I get 19-21 empty on the road and 12-13 towing my 30 ft, 11,000 pound, 12.5 ft high 5th wheel as long as I stay around 17-1800 running 65 MPH. But if I kick it to 2000 rpm I turn 70 but mileage goes to 17-18 empty an 11-12 loaded.

Coy Camp
 
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