which tune for best mpg - Ford Powerstroke Diesel Forum
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post #1 of 38 Old 09-17-2009, 04:26 AM Thread Starter
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which tune for best mpg

i've been hesitant to get a tuner because i didn't want to have transmission problems, well recently my tranny died with a stock truck. figured since it has to be rebuilt i'll go ahead and have it upgraded a little. Now that it's upgraded i would like to get some better mpg with a tuner, best i've seen so far is 13.5 with the wife driveing and 7 while towing my 34" fully loaded gooseneck. what tune should i get? I'll probably set it on that tune and forget it. i'm not looking for more power, just want better mpg without hurting tranny or engine when i decide to tow. I just want a general tune for everything, dont want to constantly be changing stuff.

2000 F-350 Crewcab DW 2wd Auto
-Engine: DIY Intake, Straight pipe exhuast
-Transmission: Triple clutch billet converter, 6 gear steel planetaries, 31 row 6.0 cooler, tci deep pan
-Auto meter Tripod Gauge kit
-Truck use: Grocery getter, hauling play tows
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post #2 of 38 Old 09-17-2009, 04:39 AM
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For what you want stock is probably youre best bet. When you order a chip most come with at least 6 different positions. You dont have to fill them. If you do get a chip i would recamend a daily driver tune and a tow tune. That is 2 tunes which will yield you the best milege and drive ability.
You can also contact one of the custom tuners and talk with them and tell them exsactaly wht you want and they will be able to write you a tune or 2 for youre truck and wht you want to do. I would get atleast 2 tunes.

I run TW but there are others.

Dale

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post #3 of 38 Old 09-17-2009, 07:21 PM
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13mpg average and 7mpg towing????? What the F*CK?? Thats not normal dude. I get 17.xmpg mostly city driving, when I'm having fun with the truck.. thats takin it to redline several times a tank. I got 536 miles w/ 130 miles being highway w/ 3 adults, 1 baby, and a stroller in the trunk, and the rest of the mileage in nut to butt city traffic. Most people get like 13mpg-ish when towing. Something is not right.

But getting a tuner will normally yield BETTER mileage assuming you go w/ custom tunes. I'd tell you to go w/ TW. I've seen a LARGE portion of these trucks get 25mpg highway w/ a custom tuner, exhaust and intake.

I've heard that the Extreme setting from tony wildman will yield the highest hp/tq, and if you keep your foot out of it the best mileage too. Sounds win/win to me.

Last edited by 85_305; 09-18-2009 at 06:14 AM.
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post #4 of 38 Old 09-17-2009, 07:39 PM
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with my tiny single shots and Swamps tunning I get 19-20mpg. This is with over 250,000 on the odometer!

Early '99 F350 Ex cab Sb, 4" turbo back straight pipe, DIY BHAF, Swamps singles, PI T/C, Red wastegate line MIA, 265,000 miles and still goin strong....
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post #5 of 38 Old 09-18-2009, 10:47 AM
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Mine has 300900 mi on it and towing 8,000lbs it averages 10mpg at 70mph with 4:10 gears in the rear. I just bought a chip from Power Hungry Performance and I hope to pick up 3 to 4 mpg towing nothing and at least 1 or 2 mpg towing. I bought the FU chip package so I can change my tunes myself it come with over 20 tunes for my truck from smoke show to 140hp extreme. I will post about it once I get it installed.
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post #6 of 38 Old 09-18-2009, 07:51 PM Thread Starter
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I got 4.10 too, when i got 7mpg i was hauling around 18k at 75mph, that seems OK to me but i would definitely like more mpg when not towing anything, which is like 95% of the time.

2000 F-350 Crewcab DW 2wd Auto
-Engine: DIY Intake, Straight pipe exhuast
-Transmission: Triple clutch billet converter, 6 gear steel planetaries, 31 row 6.0 cooler, tci deep pan
-Auto meter Tripod Gauge kit
-Truck use: Grocery getter, hauling play tows
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post #7 of 38 Old 09-18-2009, 07:55 PM
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I've heard of people towing 20k and STILL gettiing better mileage than that. Most people dont dip below 12mpg towing on the highway.
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post #8 of 38 Old 09-18-2009, 08:48 PM
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Most people say once you go over 70-72 mileage starts to drop. I cruise at 70 on the highway no matter what I do. Mileage can matter on many things. My neighbor has a little 4 cyl acura integra and my 01 camaro ss with a 5.7 got better mpg than his integra. Plus if he runs the a/c he loses quite a bit more too. I dont know if that is true on diesels but I know on gassers a/c kills fuel economy. I never use it anyway, I got 360

Early 99 F350 7.3 PSD Diy Intake,4 in TB straight pipe, 17* HPOP CCV Mod, Foil Delete, HPX, BTS VB, Coolant Filter, Autometer Boost, Pyro, Trans, Oil & Water Temp, PHP F.U. TC Lockup, EBPV Brake, Leveled, Tru Cool 4739 sittin on 315/75/R16 Toyo Open County M/T
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post #9 of 38 Old 09-19-2009, 05:52 AM
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^Ya those SS's are a work of genius man. The LSx series motors are out of this WORLD.

I dont think ac taxes fuel economy that much on diesels. But I could be wrong
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post #10 of 38 Old 09-19-2009, 02:12 PM
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Wat kind of trucks are yall driving getting 17 Ive never seen more than 14 hwy and 9 pulling 16,000


2001 F350 S/C 4x4 DRW 6spd
475K
DpTuner-high idle, 80E, 100Perf, 120Race, 4inch TB exhaust with 5in. Single black Stack, Custom 4in. intake with AEM dry filter, ISSPRO boost,pyro and water temp, zoodad mod, Beans 1.0 A/R non wastegate turbine housing
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