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Old 03-27-2018, 08:12 PM   #11 (permalink)
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little jona - '91 Dodge D 250 first gen cummins LE
Team Streamliner
Last 3: 24.65 mpg (US)

Little Jona airo modded - '91 Dodge RAM 3/4 TON D 250 2×4 AUTO
Team Cummins
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The Salted Hound Jenny. - '87 Dodge Ram 50/D-50 5sp 4X4
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Originally Posted by 19bonestock88 View Post
The minuscule amp draw from an LED running light could just about be offset by running the instrument panel lighting at a lower brightness (assuming that they’re incandescent lights)...
Most instrument panel dimmers just add resistance Heat instead of lighting consuming the same volume Watts. This may be different with the modern equipment

1st gen cummins 91.5 dodge d250 ,16cm turbo housing ehxsost manafulld wrap, Aero Tonto
best tank: distance 649gps mi 24.04 mpg 27.011usg
Best mpg : 29.3mpg 97mi 3.311usg 7/27/16

'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 03-27-2018, 11:19 PM   #12 (permalink)
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"Proper Shitbox" (SOLD) - '96 Honda Civic LX fully optioned no weight reduction
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LED DRL's use like literally nothing. Jusy buy nice LEDs and move on. Its like how I have to tell myself not to get my heart set on cool quirky mods for my car that do little but spend my money. (its never gonna ROI out)
2010 Prius. 185 LRR tires. CR 70 windshield. CR 40 side window. Passenger mirror & wiper delete. Antenna stick removed. Rear wiper & Squirter delete. 2" hitch. Warm air intake.
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Old 03-29-2018, 12:26 AM   #13 (permalink)
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Sounds to me like a way to add enough drag and complexity to offset the 1W power saving.
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Old 04-14-2018, 04:42 PM   #14 (permalink)
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Silver Aero (Personal Driving) - '04 Honda Civic EX Sedan Automatic
Team Honda
90 day: 53.28 mpg (US)

Family Minivan (my driving only) - '04 Toyota Sienna XLE Limited
90 day: 29.26 mpg (US)

Silver Aero (Pizza Delivery) - '04 Honda Civic EX Sedan Automatic
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I would think placing them in the grille area where air is already flowing into wouldn't hurt that much. I don't know, I guess they just looked appealing since my wiring knowledge is at a zero.
Silver Aero, 2004 Honda Civic EX Sedan Automatic.
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Pizza delivery:

My trips driving the stock, non-ecomodded family minivan. Mostly highway driving. I generally average 30 city, 33 highway with it.

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Old 04-14-2018, 09:02 PM   #15 (permalink)
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Gaptooth - '00 Honda Insight
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Such Fit - '07 Honda Fit Sport
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Likely either drag or power draw will disappear into background noise, so you're probably right. There's also something to be said for simplicity.
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Old 04-14-2018, 11:09 PM   #16 (permalink)
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Chorizo - '00 Honda Civic HX, baby! :D
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You could add a dedicated battery for the DRLs and charge it at home.

I hear deer are terrified of small black boxes, but not all are smart enough to fear them.
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Old 04-15-2018, 01:16 AM   #17 (permalink)
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They instinctively freeze in the headlights. I thought train headlights swept from side to side to 'unfreeze' them (or cows) but a web search does not support the claim.
Make Google don't be evil again.
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Old 04-15-2018, 07:23 PM   #18 (permalink)
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Black and Green - '98 Honda Civic DX Coupe
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I think I would add a moderate solar tirckle charge for the starter battery in general. Maybe 80watts. Then just wire-in my DRLs. It might more or less be a wash, over all.


See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.

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