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Old 03-08-2012, 10:11 PM
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Mopar1973Man Mopar1973Man is offline
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Default MPG's...

Ok gang what are you doing to get the most MPG's from your truck lets hear your ideas...
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2002 Dodge Ram 2500, 5.9L Cummins Turbo Diesel, 5 Speed NV4500 transmission, 4x4, 3.55 Gears, AirDog 150 fuel pump with 1/2" Big Line Kit, Stock Bosch VP44 Injection Pump, Bosch RV275 Injectors +40HP, Edge Comp Performance Box, BHAF (Big Honkin' Air Filter), Stock Holset HX35W Turbo, Straight 3" Pipe Exhaust, Crankcase Vent Mod, High Idle Mod, MPG / IAT fooler Mod, ScanGauge II, 25% Tinted Windows, DiPricol Gauges (Fuel pressure, Boost, Pyrometer), 235/85 R16 tires mounted on 16x7 Aluminum mags (weighing 62#), Custom Fog Lights, Custom Backup lights, Silverstar Headlights, 23-24 MPG

1996 Dodge Ram 1500, 5.9L Magnum V8 Gasoline Engine, 46RE Automatic Transmission, 4WD with CAD axle with 3.55 Gears, Mopar Performance PCM, Gutted Kitty, ScanGauge II, 35% Tinted Windows, 16-17 MPG

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Old 03-08-2012, 10:37 PM
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I got a SMARTY set at 1, propane set to come on at 3 psi of boost for mileage. This nets me about 24 mpg at 84 mph.
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  #3  
Old 03-09-2012, 09:14 AM
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Mopar1973Man Mopar1973Man is offline
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Well like I had to go up to McCall, ID for tags for the ATV and RV... The price of fuel is heading up is $4.609 a gallon.
With even my warm air intake (winter fronts) I pulled a 17 MPG climbing 7% grade and going from 2,800 to 5,200 ft. Then on the way home its a free ride down hill I got 22.6 MPG running 55 MPH.

Another trip I did to New Meadows, ID I found that even a breeze can screw with MPG's. Like I though it was unusual to see nearly 18-19 MPG but turn go home and buck a head wind most of the way and drop to 17 MPG down hill...

The trouble for me is all the up and down hill I got to travel to get anywhere but also drive efficiently..
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Michael Nelson - AKA: Mopar1973Man - Forum & Articles
2002 Dodge Ram 2500, 5.9L Cummins Turbo Diesel, 5 Speed NV4500 transmission, 4x4, 3.55 Gears, AirDog 150 fuel pump with 1/2" Big Line Kit, Stock Bosch VP44 Injection Pump, Bosch RV275 Injectors +40HP, Edge Comp Performance Box, BHAF (Big Honkin' Air Filter), Stock Holset HX35W Turbo, Straight 3" Pipe Exhaust, Crankcase Vent Mod, High Idle Mod, MPG / IAT fooler Mod, ScanGauge II, 25% Tinted Windows, DiPricol Gauges (Fuel pressure, Boost, Pyrometer), 235/85 R16 tires mounted on 16x7 Aluminum mags (weighing 62#), Custom Fog Lights, Custom Backup lights, Silverstar Headlights, 23-24 MPG

1996 Dodge Ram 1500, 5.9L Magnum V8 Gasoline Engine, 46RE Automatic Transmission, 4WD with CAD axle with 3.55 Gears, Mopar Performance PCM, Gutted Kitty, ScanGauge II, 35% Tinted Windows, 16-17 MPG

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Old 03-10-2012, 02:03 AM
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Driving 55 for around 400 miles last weekend netted me 22.7 mpg in the 08. Amazing, even on this crap fuel we have up here. So I guess 55mph is the magic number.
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  #5  
Old 03-10-2012, 10:43 PM
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Mopar1973Man Mopar1973Man is offline
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Here is 2 different trucks...

2002 Dodge Ram 2500 5.9L Cummins

1996 Dodge Ram 1500 5.9L Magnum
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Michael Nelson - AKA: Mopar1973Man - Forum & Articles
2002 Dodge Ram 2500, 5.9L Cummins Turbo Diesel, 5 Speed NV4500 transmission, 4x4, 3.55 Gears, AirDog 150 fuel pump with 1/2" Big Line Kit, Stock Bosch VP44 Injection Pump, Bosch RV275 Injectors +40HP, Edge Comp Performance Box, BHAF (Big Honkin' Air Filter), Stock Holset HX35W Turbo, Straight 3" Pipe Exhaust, Crankcase Vent Mod, High Idle Mod, MPG / IAT fooler Mod, ScanGauge II, 25% Tinted Windows, DiPricol Gauges (Fuel pressure, Boost, Pyrometer), 235/85 R16 tires mounted on 16x7 Aluminum mags (weighing 62#), Custom Fog Lights, Custom Backup lights, Silverstar Headlights, 23-24 MPG

1996 Dodge Ram 1500, 5.9L Magnum V8 Gasoline Engine, 46RE Automatic Transmission, 4WD with CAD axle with 3.55 Gears, Mopar Performance PCM, Gutted Kitty, ScanGauge II, 35% Tinted Windows, 16-17 MPG

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Old 03-11-2012, 11:39 AM
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The best I have ever done with mine is 23.4 MPG. and was running with the cruise on at about 59 MPG. for most of a tank full. Otherwise I get right around 20 MPG consistent when the weather is warm.
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Old 03-11-2012, 01:50 PM
gasjr4wd gasjr4wd is offline
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Shouldn't everyone also post what size rubber they are running? Tire size would play a part in this. I know I'm looking into going from the stock 265/70R17's to a 285/75R17's just to drop the RPMs. Shoot, I even thought about going to a 18" rim just to loose some tire squirm and get another few tire options.
Oh, and no lift/level kit.

03 3500 SRW auto
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Old 03-11-2012, 07:02 PM
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Quote:
Originally Posted by gasjr4wd View Post
Shouldn't everyone also post what size rubber they are running? Tire size would play a part in this. I know I'm looking into going from the stock 265/70R17's to a 285/75R17's just to drop the RPMs. Shoot, I even thought about going to a 18" rim just to loose some tire squirm and get another few tire options.
Oh, and no lift/level kit.

03 3500 SRW auto
I'm backwards from you... I went from a 265/75 R16 tire (85 Pounds per tire) to a 235/75 R16 tire (62 pounds per tire) so I've got much less rolling resistance (smaller tread face) and also less rotational mass for a gain of 3 MPG from the stock value...

Bigger tires doesn't mean better MPG if your adding more rolling resistance and adding more rotational mass... If you want lower R's change the gearing...
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Michael Nelson - AKA: Mopar1973Man - Forum & Articles
2002 Dodge Ram 2500, 5.9L Cummins Turbo Diesel, 5 Speed NV4500 transmission, 4x4, 3.55 Gears, AirDog 150 fuel pump with 1/2" Big Line Kit, Stock Bosch VP44 Injection Pump, Bosch RV275 Injectors +40HP, Edge Comp Performance Box, BHAF (Big Honkin' Air Filter), Stock Holset HX35W Turbo, Straight 3" Pipe Exhaust, Crankcase Vent Mod, High Idle Mod, MPG / IAT fooler Mod, ScanGauge II, 25% Tinted Windows, DiPricol Gauges (Fuel pressure, Boost, Pyrometer), 235/85 R16 tires mounted on 16x7 Aluminum mags (weighing 62#), Custom Fog Lights, Custom Backup lights, Silverstar Headlights, 23-24 MPG

1996 Dodge Ram 1500, 5.9L Magnum V8 Gasoline Engine, 46RE Automatic Transmission, 4WD with CAD axle with 3.55 Gears, Mopar Performance PCM, Gutted Kitty, ScanGauge II, 35% Tinted Windows, 16-17 MPG

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Old 03-11-2012, 08:06 PM
gasjr4wd gasjr4wd is offline
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Yes, I understand about rolling mass, resistance, etc. This is why I really want to keep the same width rubber, maybe even thinner, but just a little taller. (we call them pizza pie cutters.) I'm not even wanting a huge amount taller. I'm not wanting to change ring and pinon gears or any type of lift. I also know going down to a load range D will give less mileage.
Personally I think the trans need a over-overdrive.
I know tread design matters for mpg... I'm not wanting anything like a mud terrain. A decent all season or a fairly tame all terrain would be fine. It's not like I'm taking this big beast off roading. I have a small rig for that... I'm just looking for something good in snow and camp sites.
Going from a 17" rim to a 18" will also help to keep about the same amount of sidewall.
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Old 03-11-2012, 08:12 PM
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Quote:
Originally Posted by gasjr4wd View Post
Personally I think the trans need a over-overdrive.
What transmission do you have and also, does your truck have 4:10 or 3:54 gears?
Yes, pizza cutters will give better mileage.
I run 265/70/17 on the rear for summer and 265/75/16 for the winter (that was the size that was on my truck when I got it and the snow tires are still about 50%).
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