Spitse
Oklahoma
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Joined: 06/14/2006
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Hey if fuel gets to $5/gal and you get a couple extra miles/gal it can add up. Over the last 2.5 years and the extra mileage, I have just about paied for my Edge EZ. I got it for the towing benefits, but the better fuel mileage is a bonus.
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iflych52
Helena, MT
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Joined: 04/11/2006
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Diesel power magazine had a Dodge test truck (06?) and changed the cam which produce 2mpg increase towing and unloaded over a closed track test. It did increase emissions slighty. Does cummins know this, YES. But because of the Goverment, they would rather have us use more fuel and cleaner emmissions? How does using more fuel equate to a cleaner enviroment? I am getting 22mpg at 65mph, is it because of the chip?
07 Dodge 3500 5.9CTD Mega DRW
08 Wildcat 32QBBS
SOLD: 06 Dodge 2500 CTD QC SB, Edge Juice W/Attitude, PacBrake, Prodigy
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Dave H M
IL
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Joined: 08/11/2006
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I personaloy "think" and that is dangerous, that a ton of mods on my psd would not make it climb the tallest hill with ease.
On them there long mountain pulls when you are doing at least 6% grades, I just casnnot see my truck huffing up that hill with ease in high gear unless someone was pushing me.
Granted mods will make them pull better, I get that drift all the time when someone blows by me on a mountain grade and hits me with a light dusting of black smoke.
I thought R stood for recreation, not race.
guess I am getting old
lets go have some fun RVing.
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killerbee
PHOENIX USA, Never hot
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Joined: 03/03/2006
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What is being left out from this thread, is that longevity is traded off for these power enhancements. The OEM is not stupid, they did not leave all kinds of economy on the table for kicks. Specific fuel usage is a big barometer for sales and success of a given vehicle, and it is also widely recognized as the best way to reduce emissions (use less fuel that creates the emission) so mpg is heavily optimized.
When you add a tuner, you are increasing cylinder pressure...and there is no way around it. The tradeoff for mild increases in economy, are serious concessions in longevity. There is no paypack, I assure you. You are cheating yourself, or the person you are pawning the vehicle off to down the road.
One of the best ways to increase economy, is tire/pressure selection, as well as air drag considerations. Getting a vehicle that doesn't have lots of protruberances, like marker lamps, wide mirrors, etc. The other way involves a close scrutiny of systems compromises from the engineering floor.
Case in point: LLY Duramax. It has a major flaw in the induction system-the intake compressor mouthpiece is a flawed aerodynamic design with 4 psi of drag loss. It turns out that fixing this leads to 1-2 mpg increase while towing, and steeply less heat creation.
So mistakes do happen, but finding them on your specific model is the hard part. I had a KN element lying around and threw it on a clients vehicle, he got instantly better mileage. Clearly better. From that statement, you should all run out and buy one. What you didn't know is that the one I replaced had collapsed and was creating a major restriction (and hazard). It was a piece of junk purolator element that was made with 1/3rd the spec surface area needed for the duramax, and flimsy construction.
Unless you are comparing apples-apples (2 clean elements) don't mislead people.
I prove to people repeatedly that along with the 2-beer modifications they did to the vehicle, they also changed there driving habits. It is a psychological phenom based on the concept of Placebo Effect. You are bound to WILL the desired effect, even if it does not factually exist.
I am not saying that improvements are not possible in all cases, so don't get worked up. But IMO, 80% of claims, are false. Much of them com from the false DIC readouts that program manufacturers conveniently leave uncorrected, as IB stated...and this is a clear fraud. Lying by omission.
* This post was
edited 05/06/08 09:41pm by an administrator/moderator *
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camping man
Central Fla.
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Joined: 09/01/2001
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I didn't mess with my intake , but I'm straight threw from the turbo back, and it's quite a difference from stock, much snappier, and I haven't seen under 20mpg since then around town, highways even better 22-23. If I drive it like I'd like to, those numbers will drop real quickly.I just drove 350 miles mostly highway(62-65mph)last weekend, 45 of those were in Ft.Lauderdale city traffic, and after calculating when I got back, it was still 22mpg.. I think the truck being 2WD,and a stick, makes some difference. The funny thing is I drove there to buy a moped , and of course when i got there, the plenty they in stock, turned out to be only one in stock ,with a 4 inch scratch in it. Thank you very much that was $60 in diesel fuel down the drain.
* This post was
edited 05/06/08 07:41am by camping man *
05 Dodge 2500 Quadcab CTD NV5600/3.73rears
97 27ft.Sprinter 5er
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mrjimboalaska
Abilene, Tx. at the moment
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Joined: 04/26/2008
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Just recently I have been looking at trying to improve MPG. Have visited 3 performance shops in the area. I presently get 19mph around town, and 24.5mph on the hwy, with cruise set at 65mph. THese numbers change of course if I put my foot to the peddle.
02 Duramax (LB7 engine) 4x4 vrewcab shortbed, I get 13.5 pulling 11K pounds.
2 shops have said to leave it alone, 1 shop said MAYBE open up the exhaust.
Nice to see honesty in thse shops, as they could have easily taken a few G's from me.
For what it's worth, I have ALL THE POWER I need, and could not see any reason to add more, if I want I can ROCKET up any incline with the TT, as I have done so in the past.
I just want better MPG, WITHOUT blowing my injectors.
Truck is still more economical than a gasser though.
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killerbee
PHOENIX USA, Never hot
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Joined: 03/03/2006
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iflych52 wrote:Diesel power magazine had a Dodge test truck (06?) and changed the cam which produce 2mpg increase towing and unloaded over a closed track test.
I have scoured that magazine. I don't believe much of anything I read on it.
Duramax Cooling System Evaluation
Intro to TURBODIESEL INDUCTION OVERHEATING
THERMAL FEEDBACK and INDUCTION OVERHEATING
GM Overheating
Engine Oil Cooling
FORUM for Duramax Performance
Tune Your Own GM Vehicle
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woodrow
Nooksack WA
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Joined: 12/17/2003
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There is a great article in the new DP mag. A ford and a chevy, intake, exhaust and a programmer on both from stock, before and after dyno #'s. Personally i think it is one of the most requested and better teset. Worth reading IMO.
'07 2500HD Classic D/Max LBZ 6Spd Ally Westin nerf's,5'' mbrp turbo back,Edge Evolution
PPE airbox mod,Prodigy,Magellan nav,285 Toyo MT's,Chrome MB 16x8's,Firestone bags,level command compressor kit.Lund Fisherman 1700
My Garage Photobucket 5'er sold.
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pronstar
The LBC
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Joined: 11/20/2007
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killerbee wrote:
I prove to people repeatedly that along with the 2-beer modifications they did to the vehicle, they also changed there driving habits.
What's that?
I feel like I'm either missing something...or owed something because I'm way past the 2-beer mark 
2007 Dodge Ram 2500 CTD 4x4/QC/LB
2008 Stellar 23' Toy Hauler
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SyN
Oklahoma
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Joined: 03/27/2008
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Doug: If your still following this thread. If you can find this months Diesel World Magazine. They have been doing a project MPG with a 04 F250 SD 4x4-->6.0L They started out averaging 17.2 mpg.
They changed all fluids to Royal Purple{Synthetic}.
Upgraded to a Magnaflow turbo back system exhaust.
Airaid Intake system.
Added Xzillaraider programmer from Quadzilla
Tonneau Cover.
Just with these mods, the truck went from 17.2 mpg to 23.92 mpg.
Thats a gain of 6.72 mpg.
They increased hp from 250 at the rear wheels to 411hp.
This month they took the stock tires-->255/75R16's and replaced them with 305/70R16. Which took the overall tire dia from 31.1 in to 32.8, which was a 1.7 in increase. This change messed with the speedometer a bit and gave the speed error of 5.6% Which means the speedometer is reading 5.6% low. The tire change brought the total slightly over 24mpg.
To me this is kewl... What other auto besides a diesel, can gain this much HP and Torque and gain MPG. Plus make your truck that much more fun to drive.
This MPG experiment is still ongoing. Just wanted to share this info with ya.
2001 Ford F250 CC-7.3L-4x4-3:73L/S-{Many Mods}-{267K Miles}-{SoyPower}every fill up.
"Donaldson's" SD-AIS Intake w/ZooDad-FumotoValve-DieselSite Coolant Filter-DieselSite Transmission Filter,203 Deg T-stat-4"MBRP.
1991 Jayco Designer Series 32'JayCrane.
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