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post #1 of 18 Old 12-24-2007, 10:03 AM Thread Starter
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Angry My new 08 ?

New here but have been reading 4 a while. I've had my 08 since march and have almost 20k on it. The best milage i've seen yet is 11-12 mpgI've had it flashed 2 times already to update system. Trucks B-Day is 1/07 so it's one of the early ones. Here other people say they get 15-16 mpg think it's B.S. I can get that 2 if i do 55 and go down hill but i eventually i have 2 come back up. Had a 7.3 (great engine) All my buddies have deisels and they all say (chip this exhaust that) i put an AFE intake on it and that threw the engine light code on 3 diff. times. I'm good friends with head deisel mech. 4 ford and he says dont mess with it yet to soon.I'm even adding cetane booster. Any ideas before i trade it in and get screwed.
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post #2 of 18 Old 12-24-2007, 10:12 AM
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welcome to the .org and heres a bump for ya

-Josh

2008 2500 LMM- Deleted, Blocked, Fueled, & Tuned by:
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post #3 of 18 Old 12-24-2007, 11:38 AM
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welcome to the org...im sure some 08 guys will chime in......bumpin it up for you

2001 F350 CC LB SW 4X4
7.3 Powerstroke, Auto

Eagle Wheels
Nitto Terra Grapplers
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post #4 of 18 Old 12-24-2007, 02:47 PM
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I am not happy with mine either. I can get pretty good empty milage if I can go 75 or less, but if the wind is blowing, or I am pushing it I can drop from 17 to 13 pretty easy. Mine is so gutless it is not even funny!! I pull BIG trailers and my '94 Factory Turbo will pull with it and get's 10mpg where my 6.4 gets 5-7 and it has 290,000 miles!!! I am going to try and get Ford to buy mine back, I hate the way it pulls!! I kick myself every day for not keeping my 99.5 7.3, it pulled great and got excellent pulling milage. My 6.4 has 20,000 miles and was born 3-07, should have waited I guess.

Fletcher
'90 F250 Supercab IDI 7.3
Banks Sidewinder Turbo
4'' straight pipe
116,000 miles

'94 F250 single cab IDI Factory Turbo 7.3
3'' banks down pipe
Banks pyrometer
3 1/2'' straight pipe
K&N Air filter
Hypermax air intake
Hydrogen Generator
Pump turned up
Timing advanced
315,000 miles!



'89 F250 4x4 supercab 7.3 IDI
4'' exhaust
pump turned way up!!!
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post #5 of 18 Old 12-24-2007, 02:53 PM
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the 6.4's dont do well around town driving. Doing a fuel economy test with the IDS ive seen a pretty consistant 8-10 MPG around town (45mph and lower type stop and go driving) but hiway milage seems to sit at about 18-22 MPG over a 10 mile average..... A lot of it is driving habbits.....AND from what i can tell testing it at work, cruise controll helps hiway milage about 2-3 MPG..... Speeds above 70MPH seem to really reduce economy as well......
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post #6 of 18 Old 12-25-2007, 08:04 AM
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Stroker-08!!

1968 Chevy Impala Custom Coupe ZZ4 350 700R4 trans 3.55 Posi

2003 F250 XLT 2wd. R/C LWB 7.3 Auto Volant Air Intake 4" Turbo Back Exhaust

2008 F250 King Ranch 2wd Crew Cab Short Bed V10 Auto
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post #7 of 18 Old 12-25-2007, 08:55 AM
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I would give it a little more time..... I'm sure there are about to be MANY more options on the market for these trucks to help with these problems.

97 F350 7.3 Off-Road Build Locked on 42's

08 2500 Cummins
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post #8 of 18 Old 12-25-2007, 02:03 PM
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My 99 7.3 at 60,000 miles got better mileage/power than new (new best was 17 on the highway, at 60,000 could get 20 mpg)(I drove it like I stole it-pulled trailers from 4k to 8k consistently). I bought this 07 used at 31,000 miles, previous owner sold it because of low mpg's.My view was it possibly was not broke in, he purchased a dmax and has worse mpgs with it. Is it possible the 6.4 is not broke in?

Driving: 2011 Pale Adobe...F-350 CC 6.7 FX4 3:55-Locking Rear End-Dual Alternators-premium Lariat, moon rf, added wheel flares, 2-tone black base

Picked up 4/29/10 as of 06/20/2012 109,000+miles
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post #9 of 18 Old 12-26-2007, 07:02 AM
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Welcome to the ORG.!

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'97 F-350 "FORDOR" 4X4 (Dually Conversion, Shackle Reversal, Technicooler , Auto Meter Gauges, 4" DIY Dual Exhaust w/ '08 tips, 4" DIY intake w/ AEM filter, Wicked Wheel 2, 360 thrust bearing, Homemade E-fuel conversion, Wildman Chip, 160cc DIY injectors , DIY IDM mod) 230K and counting...
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post #10 of 18 Old 12-27-2007, 05:53 PM
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WELCOME!!!

I hope everything improves for you soon!

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