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Old Feb 8, 2009 | 03:26 PM
  #1  
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friskyjake
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Mountain Pass
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From: west coast canadafishing
idm

Installed a resitor in my idm to make it 140 volt. Truck runs so much better. My question to other guys that have done this has your fuel milage dropped down? Mine has. For some years i have kept records.Have driven the same routes on c c @ the same speed i have noticed a 2.4 mpg drop. Has anyone else found this too? Would really like to know. Friskejake
 
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Old Feb 8, 2009 | 05:00 PM
  #2  
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heathrunkles
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From: Mt. Airy MD
Did the mod 5-6 months ago and have not noticed anything. typical drop when switching to winter blend(about 2mpg) but nothing during the summer.
 
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Old Feb 8, 2009 | 05:34 PM
  #3  
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richdawg
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From: Spokane, WA
idm

1st of all, Welcome to the site, this is a great site and a great place to learn all about our trucks.
I am interested in doing this mod, but concerned about your mileage loss. When did you do this mod and how many tanks of fuel have you checked mileage on? I am hoping that you just did the mod and naturally in your testing & evaluating were just a little heaver on the go peddle than usual, and that's the reason for a 2 mpg drop.
 
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Old Feb 8, 2009 | 05:45 PM
  #4  
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friskyjake
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From: west coast canadafishing
idm mod

Sorry i forgot to mention i,m a snowbird in south east calif. no winter fuel here. Have been driving between el centro calif and yuma az, 60 miles and very flat @63 mph on cc.1700 rpms. Empty truck. Stock tires. Fuel milage has dropped 2-3 mpgs. THANKS guys. Friskyjake
 
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Old Feb 8, 2009 | 06:36 PM
  #5  
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tjbeggs
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From: Silver Lake Dunes, MI
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I didn't notice any drop either.
 
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Old Feb 9, 2009 | 07:14 AM
  #6  
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Cuda_jim
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From: MICHIGAN
Originally Posted by friskyjake
Sorry i forgot to mention i,m a snowbird in south east calif. no winter fuel here.
Pretty sure that winterized fuel is everywhere, not just in the cold climates. So the MPG drop might still be the fuel. You may even see a difference in fuels from one station to another.
 
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Old Feb 9, 2009 | 07:26 AM
  #7  
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KevinC.
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From: Ocala
I have run about 3 tanks of fuel through mine since the mod and I still get the same mileage per tank.
 
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Old Feb 9, 2009 | 07:44 AM
  #8  
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ULSD!

Bill
 
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Old Feb 9, 2009 | 07:48 AM
  #9  
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MADVAN
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From: Levittown
Originally Posted by heathrunkles
Did the mod 5-6 months ago and have not noticed anything. typical drop when switching to winter blend(about 2mpg) but nothing during the summer.
The winter blend does hurt mpg some.
The higher % of the loss in mpg comes from wasted fuel
getting motor up to temp and running to cold.

Bill
 
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