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Old 03-13-2016, 02:20 PM   #42 (permalink)
gumby79
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Join Date: Dec 2014
Location: Butte, Montana
Posts: 726

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 2×4 AUTO
Pickups
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)
Thanks: 208
Thanked 428 Times in 279 Posts
Accurate results

Also I have refrained from some simpler mods. Moonies , finder, skirts, and not so simple mods ,belie pan, side skirts ,bumper rellocation/redesine entire front end to be more like a vw bug instead of a stack of bricks ,air dam, hood angle, rain gutter delete ect Ect ...
Why most would ask ?
Disbelief. I was expecting a 10-15% improvement and surprised myself with 20%+,haveing stumbled across some thing that would need better proof than simple manipulateable MPG
so what test will be expected as un irrefutable proof and not a gusstament 100%macanical diesel no computer or OBD 2
One major differentance that may have yealded the above average results is the8" past the tailgate. A cap crossed with a camback. A design aspect not seen on other caps . This is affecting the trailing air as well, not just top/sides. This feature I've noticed being implemented on '14 and up full size pick up trucks accrost the top of the tailgate. Also on mini vans, and cars .

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How much can this bump help ? And will it work with other cars/trucks as mod?
__________________
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


Former
'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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aerohead (03-14-2016)