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Old 08-22-2010, 09:50 AM
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MPGs

At what rpm is the 7.3 most efficient?
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Old 08-22-2010, 09:57 AM
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ive always wondered the same thing

id guess the lower the better

for me, 70mph highway at 2000rpm is what i usually try to stay at, that will usually do me about 24mpg. From here to the beach its mostly flat though
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Old 08-22-2010, 10:05 AM
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yup in overdrive its 70mph at 2k rpm and without overdrive its 50mph is 2k rpm. im getting 19 highway with nothing more than an exhuast at the moment
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Old 08-22-2010, 10:54 AM
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I'd concur 1800-2k rpm's i get great mpg unloaded and 14.5 towing 2 horses in a lil trailer(bout 5k). not bad i'd say.
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Old 08-22-2010, 09:44 PM
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Damn. You guys using any additives? I get 17 empty @ 70. But I'm 4wd with 4.11s. Towing our little TT (~4500 pounds) I'd get anywhere from 11-12mpg. I am chipped, but supposedly the Bill's DD and tow tunes net you better MPG
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Old 08-23-2010, 06:09 AM
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1800 seems to be about the best cruising RPMs (keeps the boost and EGT #s low), but it's too slow. I know that at 72 MPH/2000 RPM I will average 18 MPG, but if I bump it up to 75 MPH, I will get 15 MPG. Tried that on many trips.
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Old 08-23-2010, 07:25 AM
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I drive 80mph at 2400 rpm consistently and get 16 mpg. I'm stock w/flow throw muffler.
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Old 08-23-2010, 05:24 PM
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im only getting 16.5 not towing and "4" mbrp dual exhaust how are you guys getting such great mileage
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Old 08-23-2010, 06:29 PM
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Quote:
Originally Posted by Dasaliac03 View Post
ive always wondered the same thing

id guess the lower the better

for me, 70mph highway at 2000rpm is what i usually try to stay at, that will usually do me about 24mpg. From here to the beach its mostly flat though
typo 24mpg

I get around 16.5 empty in town.
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Old 08-23-2010, 07:40 PM
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I got 14.5 mpg running 80 (2300 rpm) with a 30 mph cross wind and the AC on max (it was 105 degrees) Not too terrible.
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