2003 vs 2004/05 hemi fuel mileage - DodgeTalk : Dodge Car Forums, Dodge Truck Forums and Ram Forums
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#1 Old 11-03-2008, 11:05 PM
BARRY1ME
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2003 vs 2004/05 hemi fuel mileage

was curious if the 03 hemis get any worse fuel economy. I know that the 03's do not have EGR valves, what else changed to increase fuel economy?

2003 2500 hemi QCSB 163K miles
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#2 Old 11-03-2008, 11:09 PM
stillen
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crapola.... i hate being reminded of my poor fuel economy..

i do mostly in town trips less than 5 miles per distance, and its all stop signs and lights.... I'm averaging 11mpg, yes 11..... and this is with a superchips tune......now that i say it a few times 11, 11, 11, 11, 11 makes me wanna go stand in traffic, my luck i'd get run over by a hybrid sierra..

11.
11
11
11
11 grrrrrrrrrrrrrrr i'm mad now

05, Dodge Ram 2500 HD, 4x4, Hemi, QC, Auto, 3.73's, SLT, short bed, BFG AT's , Fisher 8 foot HD MM2 ...
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#3 Old 11-03-2008, 11:16 PM
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better then me last two tanks were 8.6mpg and the last was 10.3mpg.

2003 2500 hemi QCSB 163K miles
6" Top gun customs Bilstein 5100's
37x13.5 Nitto mud grapplers
4.56's
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#4 Old 11-04-2008, 11:50 AM
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my 03 averages 11 if I stay off of it.

I found a way to increase my gas mileage. I found if I stay 55 mph on the freeway in the slow lane, I can get up to 23 mpg's...go 65+ and it drops WAY WAY DOWN.

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#5 Old 11-04-2008, 12:06 PM
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I found if I push mine downhill that mileage really goes up!

My in-town driving is all five minute, heavy stop sign/light stuff. Mileage sucks.

On the freeway I can do OK by keeping it between 55 and 60.

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#6 Old 11-04-2008, 04:08 PM
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see thats why I love this forum,,,,,, im not the only one that is suffereing, i always think my truck is the odd ball, like me...

05, Dodge Ram 2500 HD, 4x4, Hemi, QC, Auto, 3.73's, SLT, short bed, BFG AT's , Fisher 8 foot HD MM2 ...
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#7 Old 11-04-2008, 04:11 PM
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I'm averaging about 13.5 on the 91 Performance Tune if I stay out of it. The vast majority of my driving is in-town.

I have talked to several people about the economy of a 2003 versus an 04 or 05. Everyone I have talked to has said they haven't seen much more than what I get out of an 03 Hemi. I'm not ready to give up and take that for truth, but I don't have the time to look into it too much.

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#8 Old 11-04-2008, 05:14 PM
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Just for shits and giggles, check on your evap/canister under your trucks. I was under doing my oil change and noticed the large evap hose was disconnected from the canister. Since hooking it back up my mileage went up 30%. My dte at fillup usually stated 355, now I've been seeing 450 on my past 2 fill ups, since reconnecting it.

It's not a very tight fit.

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#9 Old 11-04-2008, 06:40 PM
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I average about 12 to 13 most of the time with mine. It only drops to about 10 or 11 when I dont stay out of it. Although some of that could be the manual tranny.

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#10 Old 11-04-2008, 07:00 PM
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I have an 04 and it still pretty much sucks. I dont think its an 03 thing.

I average 12.5 and I drive pretty easy most of the time.

Mine- 1999 Ford Ranger XLT RCSB 3.0L 5 speed 3.73

Hers- 2005 Jeep Grand Cherokee 3.7L auto 3.07

Sold- 2004 Dodge Ram 1500 QCSB 5.7L auto 3.92
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#11 Old 11-04-2008, 07:14 PM
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i average about 10 going over the mountain everyday

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#12 Old 11-04-2008, 08:13 PM
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i must have the oddball i avg 15 in the city, and 20-21 hwy

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#13 Old 11-04-2008, 08:16 PM
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I get around 12 in the city and roughly....17 on highway but I drive pretty hard cuz i like to hear my exhaust and I hate driving under 70 on the highway so you'll get better if you are 65 or under

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#14 Old 11-04-2008, 08:19 PM
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I average 14-15 mpg in the city if I keep it under 2000 rpms on accel. and highway I get 18 mpg running 70 mph the time.

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#15 Old 11-04-2008, 08:35 PM
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Quote:
Originally Posted by dizzyD View Post
Just for shits and giggles, check on your evap/canister under your trucks. I was under doing my oil change and noticed the large evap hose was disconnected from the canister. Since hooking it back up my mileage went up 30%. My dte at fillup usually stated 355, now I've been seeing 450 on my past 2 fill ups, since reconnecting it.

It's not a very tight fit.

interesting will do. I did get some evap codes I think p0441 or 440. It was the code that is not the least major of the two. I already replaced one of the hoses on the evap, and used zip ties on both ends to make sure it was tight on the canister.

2003 2500 hemi QCSB 163K miles
6" Top gun customs Bilstein 5100's
37x13.5 Nitto mud grapplers
4.56's
K&N CAI
Nfab steps
bushwackers
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#16 Old 11-04-2008, 08:38 PM
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i have an 03' hemi and i get about 17mpg in town and 20-22mpg on hwy at 65mph, i had to tune it properly as the factory did not, a vehicle always comes from the factory not tuned perfectly-its good but not perfect, my timing was a little off from the factory as some other things were not set right
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#17 Old 11-04-2008, 08:40 PM
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i have a 2004 and whenever i let my mpg on the computer average out over a couple weeks it always ends up around 13.5. for u people who get 11 are you constantly reseting it or do you let it average out? 13.5 isnt bad in my eyes. i have a cold air intake (ramhammer, powerwire and custom exhaust)
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#18 Old 11-05-2008, 07:28 PM
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if I could get 11-12 I would be pumped.

2003 2500 hemi QCSB 163K miles
6" Top gun customs Bilstein 5100's
37x13.5 Nitto mud grapplers
4.56's
K&N CAI
Nfab steps
bushwackers
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#19 Old 11-05-2008, 10:05 PM
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I get 12.5 and i lauch it from every stoplight.
Its a SC/SB

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#20 Old 11-06-2008, 05:10 AM
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Quote:
Originally Posted by policeram View Post
i have an 03' hemi and i get about 17mpg in town and 20-22mpg on hwy at 65mph, i had to tune it properly as the factory did not, a vehicle always comes from the factory not tuned perfectly-its good but not perfect, my timing was a little off from the factory as some other things were not set right
How did you change the timing? Did you do it with different programing or did you move the sensor?

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