Better fuel economy? - Ford Powerstroke Diesel Forum
6.0L Performance Parts Discussion What has or has not worked for you?

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  #1  
Old 01-17-2009, 03:06 PM
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Better fuel economy?

New to the site. I have a 2004 F250 6.0L with about 67,000 miles. It has enough power for my needs. What I'm looking for is how to get better mpg. It's my daily driver and I do alot of city as well as highway driving. Is a programmer the best option? I am pretty budget focused right now. Thanks.
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Old 01-17-2009, 03:24 PM
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I plan for worse MPG after gettin my tuner!! Gonna be FLOORIN it every chance I get...

It really comes down to how much better MPGs you can get outta the tuner and how long it takes to make up for the cost of the tuner... If its only 2-3mpgs it can take a while...

I want a tuner for the power, prolly wont use the economy settings...

I am gettin about 16MPG without engine mods right now on highway... Gonna get exhaust and custom tunning here soon...
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Old 01-17-2009, 04:31 PM
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Well iam currently getting about 17-18 mpg in the city and about 20-21 on the highway basicly stock except my intake and 4" tb exhaust. I havent installed my tunner yet but iam sure with my tunner it might help if i keep my foot off the floor.
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Old 01-18-2009, 06:18 AM
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Quote:
Originally Posted by o3stroker View Post
but iam sure with my tunner it might help if i keep my foot off the floor.
That's going to be one of the key things that will determine if you see mpg improvements or not.
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Old 01-18-2009, 10:54 PM
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My best MPG Tool is the ScanGaugeII that indicates my instant MPG reading, and a lot more valuable readings. I tend to try to keep a constant MPG rate while trying to increase the MPG average. I have seen averaging 23MPG for milles at a time. But city driving with trafic lights just kills the average.
I have a 6 speed and the RPM that I operate my truck make a huge difference in town driving. I seldome shift to overdrive till I am above 50MPH, I use to shift at low RPM thinking I was taking it easy so MPG would be good, Well I do the opposite now, I shift around 2000RPM and it allows the engine work more effciently.

I had a 4 Cylinder Ranger one time and my best milage was witout using the overdrive.

I find that with my programer the efficiency is at higher RPMs then at stock setting. So I get much better milage advantage at higher speed.

While towing I shift at 2200RPM and to OD at 55MPH. If I drive below 55MPH or on hilly highways I get great milage on drive. When towing on level roads the best milage seam to be with the engine at 1750RPM on OD. I get all these max efficiency readings from my ScangaugeII Gauge.

There are now more models of these type of gauges available, I use my scangaugeII so much that with 4 gauges I hardly check my regular dash gauges. I usualy monitor the MPG,Water Temp. Intake Air Temp, Ambiant Temperature. Exhaust Gauge is not shown on the 6.0 so I have a Pyro.

Last edited by caissiel; 01-18-2009 at 11:09 PM.
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  #6  
Old 01-19-2009, 06:35 PM
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Great post caissiel, too many people think low RPMs give you the best mileage. What they don't realize is there is a speed at which the engine is most efficient and if you can use your gearing to keep it in this speed it helps a lot.
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Old 01-20-2009, 11:22 AM
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The best I got was 18.97 MPG with a 4" turboback exhaust and DJ's street tune. This is using good old calculations, not the overhead console or some other form of electronic device. I have my doubts on how accurate they are.
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  #8  
Old 01-20-2009, 11:34 AM
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can i interest ya in 85 mpg or more?
link
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Old 01-20-2009, 11:41 AM
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Well, according to your sig you get under 16mpg.
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Old 01-20-2009, 11:45 AM
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Quote:
Originally Posted by cartmanea View Post
Well, according to your sig you get under 16mpg.
I get around 16 mpg overall....thats on free used vegi oil. I only fill my 36 gal. diesel tank every 2500 - 3000 miles.
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