fuel economy - Ford Powerstroke Diesel Forum

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post #1 of 11 Old 02-23-2010, 04:24 PM Thread Starter
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fuel economy

i was just wandering what everyones fuel economy was like on the highway. and what mods have been made to acheive this
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post #2 of 11 Old 02-23-2010, 04:29 PM
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my extcab shortbed gets around 20hwy(i mean i got 17.8 on a 60/40 hwy city split tank) driving. it also depends on the size truck weight=more fuel.
anyway i keep it at bout 70mph with my 3.73's so im not spooling the turbo crazy just around 2k rpms.
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post #3 of 11 Old 02-23-2010, 04:35 PM
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my old truck('00 f-350 ecsb, 6-spd 7.3) got 20.2 MPGs with TW chip and straight piped exhaust
back road driving avg 45mph. and not babying it.
I've seen 24 mpg highway babying it.

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post #4 of 11 Old 02-23-2010, 06:13 PM
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Most of my driving is mixed. If I can keep my foot out of it I get around 17, driving like I stole it yields in the neighborhood of 14. Mods in the sig.

2002 F250 CCSB Lariat
Front end leveled
6637 intake
4" MBRP turbo back
Dick Cepek DC2
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Stage 1's and PHP tuning
Autometer factory match (EGT,Trans,Boost)
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post #5 of 11 Old 02-23-2010, 08:11 PM
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I drive like grandpa and get 13.5 mpg on my 2000 F250 with 2WD. Only once did I get 16.5mpg.
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post #6 of 11 Old 02-23-2010, 08:15 PM
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Originally Posted by mas360 View Post
I drive like grandpa and get 13.5 mpg on my 2000 F250 with 2WD. Only once did I get 16.5mpg.
I'm gettin about the same. Trying to get it better though.

With diesel doesnt more boost = more MPG? I know that they dont follow the rules of their gas counterparts where more boost = worse fuel economy b/c the gassers have to maintain the 14.7:1 A/F ratio, while diesels can go as lean as 85:1. Is this true or am I all F____ed up?

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post #7 of 11 Old 02-23-2010, 08:39 PM
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..if you own a big truck i dont get why people are so worried about fuel mileage...just get in it and drive it..if you dont like it shoulda bought a car lol

i havent seen over 20mpg with, intake,exhaust,chip

05+ coils, 10 Rear diff, box, tailgate, lights, bumper, Full 07 front harley swap...the list is endless.

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updated as of OCT 28/2013
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post #8 of 11 Old 02-23-2010, 10:17 PM
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Quote:
Originally Posted by 03_Turbo7.3 View Post
..if you own a big truck i dont get why people are so worried about fuel mileage...just get in it and drive it..if you dont like it shoulda bought a car lol

i havent seen over 20mpg with, intake,exhaust,chip
I bought mine so I can tow the trailer I bought home (from CA to MI) and to do night driving. I have a GSXR 600 for the day, but at night the truck eats up gas and my coin. For most of us spending that extra coin is a concern.

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post #9 of 11 Old 02-25-2010, 01:11 PM
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well it get 10.5 and wonder how to get more out of mine and thats driving 70mph i got exhaust programer wastegate banks power wheel
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post #10 of 11 Old 02-25-2010, 01:28 PM
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I'd be hog in heaven if I can get 16.5 mpg consistently from tank to tank. I just now starting to use TWC-3 oil mix. Let's see if that helps with mileage. It sure makes the engine runs smoother.
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