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Old 05-04-2017, 04:08 PM   #21 (permalink)
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Join Date: Dec 2014
Location: Butte, Montana
Posts: 725

little jona - '91 Dodge D 250 first gen cummins LE
Team Streamliner
90 day: 23.4 mpg (US)

Little Jona airo modded - '91 Dodge RAM 3/4 TON D 250 24 AUTO
Team Cummins
90 day: 18.5 mpg (US)

The Salted Hound Jenny. - '87 Dodge Ram 50/D-50 5sp 4X4
90 day: 20.24 mpg (US)

Jona Allison aero - '91 Dodge Ram D-250 Le
90 day: 20.76 mpg (US)
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The technology helps the newer trucks but the emissions equipment offsets the gaines. My 1st gen intercooled5.9L 91 stock ran from 16mpg to 22.5mpg withan avg of 18.xx. With the Aero Tonto my numbers are 21mpg with 2 100mi runs at 29.6mpg from Helena, Montana over the continental divide 6800ft passes to Anaconda, Montana and an avg of 24mpg. In April I ran from Albuquerque, New Mexico to Las Vegas, Nevada at 70mph and got 24.92mpg .
Adjust the nut behind the wheel and you can squeeze a cupple mor mpg out of it.
Use the Torque App (or similar) and monitor your IAT ( intake air temperature)and block your raidator till you start seeing an increase. Then back off 5%, open the hole 5%larger. The size of the hole will be different for winter and summer, and wether or not you have grades to pull, and loads over 1500lbs.
Based on a long conversation with a Cummins tech. 45-60f is ideal IAT or as close to ambant if ambant is above 60f can be 20-50 above ambant. Per Cummins for every 10 above 60 f there is a 1%loss of power. EG a 250hp engine will only produce 240hp and buen 250hp worth of fule. At an IAT of 90f.

1st gen cummins 91.5 dodge d250 ,HX35W/12/6 QSV
ehxsost manafulld wrap, Aero Tonto
best tank: distance 649gps mi 24.04 mpg 27.011usg
Best mpg : 31.32mpg 100mi 3.193 USG 5/2/20

'83 GMC S-15 Jimmy 2door 2wd O/D auto 3.73R&P
'79 Chevy K20 4X4 350ci 400hp msd custom th400 /np205. 7.5-new 14mpg modded befor modding was a thing
87' Hyundai Excel
83 ranger w/87 2.9 L FI2wd auto 18mpg on the floor
04 Mitsubishi Gallant 2.4L auto 26mpg
06 Subaru Forrester XT(WRX PACKAGE) MT AWD Turbocharged 18 plying dirty best of 26mpg@70mph
95Chevy Blazer 4x4 auto 14-18mpg
04 Chevy Blazer 4x4 auto 16-22mpg

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Old 06-28-2017, 12:20 AM   #22 (permalink)
i should weld
Join Date: Apr 2017
Location: A hilly area in Western Canada
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Why not have an electric heater warm the DPF to regenerate?

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