6.4 MPG 4x4 ccsb - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 23 (permalink) Old 07-19-2011, 06:46 AM Thread Starter
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6.4 MPG 4x4 ccsb

Guys,
I just bought a 2008 F250 4x4 KR CCSB. I want to maximize my mpg's with in reason. The truck has 3.73 gears and automatic

My plan
- AFE 4" Turbo Back
- AFE Stage 2 intake
- H&S Mini Maxx with custom tune
- Tonneau Cover (came with truck)
- Sinister EGR Delete
- Sinister Coolant Filtration
- FS-2500 By-pass oil filtration
- Stock 20's with stock tires
- 2" drop with 5.4 front springs and no blocks in the rear
- Full Redline synthetics: transmission, transfercare, and f/r diff
- Mobil 1 motor oil 15w40
- Preston radiator flush and replace with ELC Cat 5
- Fuel filters
- Trans filter

Goal 23-24 mpg's on my 70 mile control loop with normal diesel (no Bio)

I drive 65 mile round trip to work and i would like to make that at 20ish without too much trouble on B100 or B50 (if B100 will not do it) I have a source of high quality B100 about 4 miles from the house :) ...

I am very good at driving conservatively for mpg's. I had a 2007 F350 DRW CCLB 4x4 auto with 4.10's with intake, turbo back, and tunner, it was stolen . I could get 19.5 on my control loop, and 18.5 on my commute to work. The new truck is more aerodynamic, lighter, half the drive wheel rotational inertia!!! better gears, and more efficient engine.

How possible is this too do?
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post #2 of 23 (permalink) Old 07-19-2011, 09:38 PM
pog
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Re: 6.4 MPG 4x4 ccsb

dpf delete, intake and exhaust is pretty much gonna tell you what the best mpg you can get. every truck is different. personally i think your goal is a bit high. i am getting 14-15mpg. i run kem 345, intake, exhaust and egr delete. my lie-o-meter reads 22mpg but hand calculated its always between 14-15mpg. i wouldnt run anything higher than b5 since these motors are only made to run on regular and up to b5 diesel. im sure others do run high % of bio but thats just me. but yeah get it tuned delete the dpf and throw on an intake and see what happens.
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post #3 of 23 (permalink) Old 07-19-2011, 11:03 PM
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Re: 6.4 MPG 4x4 ccsb

Only thing I can see that will help MPG is the tonneau and lowering the truck.

All the other stuff may confer other benefits but won't improve MPG.

2000 F-350 SC 4x2 6 speed
3.08 gears Gear Vendor Overdrive
Slammed 4"
Rugged Air Dam
315,000 miles
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post #4 of 23 (permalink) Old 07-20-2011, 12:57 AM
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Re: 6.4 MPG 4x4 ccsb

the tuner will be the biggest mpg improvement no question about it
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post #5 of 23 (permalink) Old 07-20-2011, 12:18 PM
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Re: 6.4 MPG 4x4 ccsb

My 6.4 right now usualy gets about 17 highway if I'm at a nice cruise, no 75-80. Thats with 4" DP back, S&b, and H&S 300 hand calculated on 35" trail grapplers. With stock tires, lowered etc like you planned you might see 20 on a nice highway cruise. My too and from work drive has no highway and i usually average only about 13
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post #6 of 23 (permalink) Old 07-20-2011, 12:44 PM
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Re: 6.4 MPG 4x4 ccsb

you will probably be at 20 if you set your cruise at 65. I'm averaging about 18 right now since I've lowered the truck back down haven't got my 5.4 springs yet they show up thursday. But really isn't going to add to your mpg. What others have stated about you installing a tuner and dpf delete will be your biggest gain over stock. But don't get your hopes up if you don't reach your mpg goal.

'11 2500 6.7 CCSB SLT | XRT Pro w/ OD | GDP Mega-Flow S-3 | AD II 165 | ARP | H&S Cooler Delete | Flo~Pro 5" SS TBE 6" Tip
'08 F-250 SOLD 517/1094


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post #7 of 23 (permalink) Old 07-20-2011, 01:06 PM Thread Starter
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Re: 6.4 MPG 4x4 ccsb

I know it sounds funny but i drive at 65mph all the time. I don't like getting tickets :) I have issues getting tickets in the modded Vette :)

Okay new goal . 20mpg's. I know when i drove my F350 dually i was getting 19.5 mpg's hwy, calculated. Thats staying under 40% load at all times, under 2000 rpm at all time, Coasting up to stop lights, and all those other other hyper mileage tricks :)

I have been reading a lot on here about mpg tests. Some say that folding big towing mirrors back can help 1mpg! Well i have those auto folding mirrors :) so it will be easy to test.

I will document my findings on this thread :). I will post hand calcs and lie o meter calcs.

BTW how could that mpg comp on the truck be sooo wrong!!! You would think it would be super simple. Any aftermarket system that can measure accurately?
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post #8 of 23 (permalink) Old 07-20-2011, 02:44 PM
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Re: 6.4 MPG 4x4 ccsb

When I ran my spartan for over a year the meter on the dash was WAY off atleast 7+ most the time. On the new H&S 300 tune my dash stays within 1mpg every fill up. If I look at my dash and subtract 1 it usuallys is dead on to my hand calc. The biggest difference I've seen from meter to hand was around 2 when I was towing a boat.
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post #9 of 23 (permalink) Old 07-20-2011, 02:56 PM Thread Starter
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Re: 6.4 MPG 4x4 ccsb

What kinda mpg numbers do you get?
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post #10 of 23 (permalink) Old 07-20-2011, 05:55 PM
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Re: 6.4 MPG 4x4 ccsb

~13 normal driving around which has little to no highway. Then usually 17 on the highway if I can keep it under 70. auto, 3.73, 35s
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