MPG for my 7.3 PSD Excursion
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Senior User
Joined: Jul 2009
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MPG for my 7.3 PSD Excursion
Owned my 2000 7.3 PSD 4x4 Ex for about 3 months now. Im getting crappy mileage, about 12. I have 285/75/16 for tires and have an Egde programmer set on level 2 and have the 6637 mod. The Ex has 239,000 miles and I do run b100. Any one else have the Edge progammer and get about 12??? Is the programmer the reason? ANy help would be great.
Thanks
Thanks
Super Moderator
Joined: May 2004
Posts: 29,380
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From: Central Coast of CA
There are a lot of factors that can affect your fuel mileage. If you do a quick search in the 7.3L PSD forum using the term "mileage" the results should give you a lot of threads and posts running down the possibilities for you, more than my tired brain could ever try to do tonight.
Stewart
Stewart
Freshman User
Joined: Oct 2009
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Owned my 2000 7.3 PSD 4x4 Ex for about 3 months now. Im getting crappy mileage, about 12. I have 285/75/16 for tires and have an Egde programmer set on level 2 and have the 6637 mod. The Ex has 239,000 miles and I do run b100. Any one else have the Edge progammer and get about 12??? Is the programmer the reason? ANy help would be great.
Thanks
Thanks
Good luck in your quest to find out what is wrong.
Posting Guru
Joined: Dec 2007
Posts: 1,265
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From: Metro Detroit, MI.
2002 Ex. Limited here. I used to get about 13 bone stock. Added the AFE stage 2 pro grd, and the dp tuner now its about 17-19mpg.
Took a trip to Alabama a few months ago and it was 21mpg with the cruise control set at 70mph.
Took a trip to Alabama a few months ago and it was 21mpg with the cruise control set at 70mph.
FTE Leadership Emeritus
Joined: Sep 2003
Posts: 12,246
Likes: 761
From: Houston, Texas
Part of what's killing your mileage is B100, it's a solvent and has strong lubricating qualities that ULSD lacks. It works wonders for your truck, but it kills your mileage and power. I usually run a tank of B100 once a month to clean out my fuel system and keep things lubed up; other than that, I'm running ULSD with some Diesel Kleen.
Per Stewart's suggestion, I'd recommend something other than the Edge setup you've got. They make awesome power, but don't do much for your trans. Save your pennies and get yourself a DP-Tuner, you won't regret it. Jody not only knows how to make a 7.3 run, but he knows how to adjust the trans for the power the engine is putting out.
You should also look into a 4 inch MBRP system, it makes all the difference in helping your truck breathe better and get better mileage. If the money for an MBRP system isn't available, I'd get a Walker BTM welded in place of the stock setup; it's not a 4 inch system, but its way better than the restrictive stock muffler.
Per Stewart's suggestion, I'd recommend something other than the Edge setup you've got. They make awesome power, but don't do much for your trans. Save your pennies and get yourself a DP-Tuner, you won't regret it. Jody not only knows how to make a 7.3 run, but he knows how to adjust the trans for the power the engine is putting out.
You should also look into a 4 inch MBRP system, it makes all the difference in helping your truck breathe better and get better mileage. If the money for an MBRP system isn't available, I'd get a Walker BTM welded in place of the stock setup; it's not a 4 inch system, but its way better than the restrictive stock muffler.
Logistics Pro
Joined: Mar 2006
Posts: 3,678
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From: Rapid City SD
I lose about a mile or two per gallon when using B100, but still get around 17-19 mpg if I can keep it at 75...
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Cargo Master
Joined: Jan 2008
Posts: 2,219
Likes: 190
From: Colorado Springs
12mpg? That is what mine said until i reset the meter after a fill-up. Try that, and then you will see a more accurate reading. (higher mpg reading)
I get 22-24 mpg on level freeway going 55-60mph.
Of course, a better way is to do your own math.
I get 22-24 mpg on level freeway going 55-60mph.
Of course, a better way is to do your own math.
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Elder User
Joined: Feb 2007
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I run my programmer at level 3 and get about 15-17 mpg running pretty hard at 75 - 80 mph and that's in some hilly terrain. My mileage drops quite a bit for in town driving and will get as low as 10 mpg for short runs in cold weather. That's calculated mileage, not as reported by the lie-o-meter.
Junior User
Joined: Jul 2008
Posts: 78
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Just returned from a round trip to NYC from Salt Lake City. Averaged about 19 mpg from SLC to NYC, no load, back roads for the most part, about 65 mph or lower most of the time. Position 3 on my Edge.
Return trip, pulling a 4500 lb Uhaul, interstate all the way, averaged about 15 mpg at 70-75 mph, should have been in position 2, but I forgot and left it in 3.
Return trip, pulling a 4500 lb Uhaul, interstate all the way, averaged about 15 mpg at 70-75 mph, should have been in position 2, but I forgot and left it in 3.
FTE Leadership Emeritus
Joined: Sep 2003
Posts: 12,246
Likes: 761
From: Houston, Texas
Sounds like you need to reagear like I did, 35s and 3.73s did not agree with my truck or my wallet. As soon as I regeared to 4.10, my mileage and power went back up...
More Turbo
Joined: Oct 2008
Posts: 657
Likes: 4
From: Pueblo, CO
Funny thing is how many i have seen people arguing against re-gearing. Most claim you can just custom tune it and it will overcome all the power loss... I tend to disagree. And you are one of the few proponents of regearing and have the experience to back it up! thanks!
Also want to add: My truck only has about 30K miles on it, so it is still breaking in - hope to see mileage get better and better. And I'm at 4700ft elevation... it takes more foot in the throttle to get the big diesel rolling up here...
Last edited by RMBC Freeride; May 26, 2010 at 01:43 PM. Reason: added