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Custom Dodge Ram Performance Mods - Engine - 5.7 HEMI V8 Discuss modifying your Dodge Ram with Performance Parts and Accessories!
Factory Spec: 5.7-liter HEMI® V8 engine - 390 horsepower, 407 lb-ft of torque.


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  #11  
Old 02-23-2012, 07:20 PM
chrisp chrisp is offline
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programmer for sure, I was at a best of 13mpg hwy on the dtc before i did the programmer, after i put the dsp 91 tune i got 17.3 mpg. alot could be due to the fact that the dsp corrected speedometer/odometer due to increased tire size though (245 to 285). also i have a catback and drop in k&n
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  #12  
Old 02-24-2012, 12:03 AM
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One thing I know for sure a TB spacer on a none carb vehicle is a waist. The whole idea of them it to add turbulence to the air and fuel to get them to mix better. But since we have EFI there's really no point. Also they're pretty noisy. Best bang for buck CAI good plug and wires keep stock tires and reliable programer. Like I stated before wasn't impressed with the bully gt. Oh and on the electric fan if you do replace the mech fan over compensate Ive found when changing out the fans they do great in the winter but come summer they tend to not keep up with the heat.
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  #13  
Old 02-24-2012, 10:34 AM
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OP,
I think your idea of an electric fan is a good idea. I just don't know if it will give you mileage gains to justify the cost of the swap. But theoretically, it does take away a parasitic accessory from the front of the engine.
CAIs are a good idea to free up the intake tract some, but i don't know how much mileage you would realistically gain from one. I think their main claim is increased HP at 4K+ RPMs. But they do make it a bit easier for the eninge to breathe. ( I personally use on one on my vehicles)
I think the Tuner/Programmer is one of the best ideas as it gives you direct control over A/F ratios and spark tables. I have noticed good results in the past with tuners on other vehicles i have owned in the past and wouldnt hesitate to buy one for my current Ram.
I think gears could go either way..... they make it easier for the truck to get going, but i feel the elevated RPMs on the freeway may not be beneficial. But i have read where Rams have the same mileage rating regardless of factory rear gear ratio.
TB spacer i don't have experience with, but it seems a bit too easy to accomplish much realistically.
I saw headers mentioned earlier in the thread and agree with that one 100%. They make it easier for the engine to exhale all the burned gasses, and our factory manifolds look kinda restrictive.
As with all the mentioned items they are designed more for performance first and mileage second, so driving with a lead foot might net you worse long term mileage than you had prior to some of these mods. As I have read in the past the best modification for better mileage is "the Driver Mod"
I think for the most part if there was an easy several MPG to be gained on these vehicles Dodge would do this from the factory as mileage concerns are way up on their priority list. But then so are emissions and sometimes those two may not always go hand in hand.
Hope this helps.
--Glenn
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  #14  
Old 02-25-2012, 01:31 AM
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Quote:
Originally Posted by 08ramKING View Post
As the title says. I wanted to start a list with idea's to gain performace+increase fuel economy at the same time. So far I've got:

-electric fan vs. engine driven clutch fan
-Cold Air Intake
-Programmer/tuner (which now I'm hearing is BS about the gains in MPG)
-gears(in a way for bottom end, torque)
-throttle body spacer(also questionable)


FEEL FREE TO ADD YOUR IDEA, I WANT TO HEAR WHAT PEOPLE SAY AND HAVE EXPERIENCED.


Electric fan and programmer are the only mods listed that will potentially increase fuel economy and performance at the same time. Besides what is listed, headers might provide a very small increase in mpg along with a performance gain.

taller gears might help assuming you're running a stock tire size.
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Old 02-26-2012, 02:19 AM
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Or, instead of spending 2k+ on performance mods. You can spend that on a cheap-o 4 cylinder to get better gas mileage!

Thats an option, but you're probably thinking what I'm thinking, the Ram is way better of a choice. Only problem that I've had with many of my previous cars, if you have the power and sound, you're more likely to burn a little more gas wanting to hear and feel the money you've "invested" in your vehicle. I'm still sketchy about doing anything to my Ram for that reason.
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  #16  
Old 02-26-2012, 05:58 PM
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Do tonneau cover affect anything ?
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  #17  
Old 02-26-2012, 06:13 PM
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^No. I never noticed a difference on my ford, and mythbusters did a show on it as well... Also tailgate down or off technically hurts mpg as well...
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  #18  
Old 02-26-2012, 09:59 PM
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I just put a K&N CAI and noticed a 2-3 MPG gain. Very happy with the buy!!!
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  #19  
Old 02-29-2012, 11:36 PM
Shadow634618 Shadow634618 is offline
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Quote:
Originally Posted by 08ramKING View Post
Question. Has anyone ever seen fuel gains or power gains with a TB spacer???
My CAI came with the TB spacer. Therefore, I can't say that the TB is the reason my MPG's improved, but I improved about 2 MPG city but only 1 MPG hwy. I also have a Superchips programmer. I will say that the 87 octane tunning gives better results than the Gas Mileage tunning.
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  #20  
Old 03-01-2012, 12:09 AM
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Tonnaeu cover bed
Cold air and flow master
Programmer
Electric. Fan
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