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6.4L Power Stroke Diesel Engine fitted to 2008 - 2010 F250, F350 and F450 pickup trucks and F350 + Cab Chassis

f450 work truck....finally removing the dpf

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Old 08-22-2010, 11:11 AM
Texas450 Texas450 is offline
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f450 work truck....finally removing the dpf

hello everyone im new to the fourms...i live in houston Tx. area and have a 2008 F-450 crew cab with a 12 foot flat bed on the back. I am a owner operator in the hot shot biz and i haul alot of oil field equipment. i recently decided its time to remove the dpf and put a tuner in (livewire) and also i am replacing the intake with a AFE phase 2. i currently only recieve 8-10 mpg unloaded.... the truck weighs 10,000 lbs empty....

I have got all the parts on order and will recieve all parts by thursday. Im looking forward to posting and sharing the results with you. im hoping i can squeeze 15 mpg out of it but i guess we will see.


update coming soon

texas450
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Old 08-23-2010, 12:52 AM
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StanleyZ StanleyZ is offline
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Hi Texas. welcome. There are lots of folks on here with DPF deleted and a tuner. Mostly spartan I think. You can read the threads and catch up, DPF delete is the most talked about subject on this forum. BTW, how many miles on your truck?
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Old 08-23-2010, 06:13 AM
Texas450 Texas450 is offline
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thanks stanley.....my truck has 68,000 miles on it. i bought it 2 weeks ago for work. the mileage is crushing me. so i hope and pray making a few changes will bring more desirable results....my other truck is a 2000 7,3 drw f350 single cab....it has 375000 miles on it and gets around 16-18 mpg....how do i see what rear diff gear ratio i have? and is it easy to change?
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Old 08-23-2010, 07:40 AM
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the stock ratio is listed on the white door tag at the drivers door, last row under AXLE. the list of what they mean (mine is 4N = 4.10 limited slip)
is in the tech folder item at the top of this section. (sticky it will always be listed at the top).

15 seems very optimistic.. 8-10 empty at 10,000lbs dry weight seems about expected..

14.5 on the highway empty.
I get 12.5 empty around town, at 8000lb empty.
9mpg towing 7000lbs on the highway.. (50% better than my gas suburban tho)

mine is a 4x2 DRW

Sam
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Old 08-23-2010, 08:54 AM
R-T0r21on R-T0r21on is offline
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If you have the 4.88 diff, you can change it to 4.30. That ought to help MPG's a bit too. Change over should be fairly easy. You didn't mention if your truck is 4x4 or 4x2. Obviously, if it's 4x4 you'll need to change ratios in both diffs.
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Old 08-23-2010, 10:58 AM
kylebryan kylebryan is offline
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you can go ahead and kiss your mileage goodbye with the 6.4. especially if you have a 450 witht the 4.88 gears. I get about 12-13 in town running a spartan 250hp tune with the DPF off. highway mileage is about 16-17 but im running an F-250 with 3.73 gears in it. Those numbers are completely unloaded and hand calculated.
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Old 08-23-2010, 11:33 PM
F250Wheels F250Wheels is offline
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I installed 3.73 gears in my 2008 F450, it helps the mileage.
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Old 08-24-2010, 09:16 AM
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Just an fyi, you don't want to tow with a hot tune otherwise you'll do what most 6.4 users can't: destroy their engine.

Weekendwarrior32 actually blew the headgaskets on his 6.4 F450 towing while tuned. A mild tune won't hurt, but just keep an eye on things...
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Old 08-24-2010, 09:55 AM
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Quote:
Originally Posted by F250Wheels View Post
I installed 3.73 gears in my 2008 F450, it helps the mileage.
How much did it improve and did it impact the power of the truck.
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Old 08-24-2010, 03:35 PM
Texas450 Texas450 is offline
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i dont tow alot. when i do its no more than 15000 lbs maybe once a month.....i mainly just use the 12 food flat bet to haul my cargo....most legally im aloud to carry on the bed is 6000lbs on avg i carry 3000 to 5000 per trip.....what is the lowest set of gears i could go with and not have a issue?

also to awnser a previous question ...my truck is 4x2......

i should have everything installed by the weekend....i hope i get at least some improvement in the mpg .....

also is it important to use a additive like diesel kleen? if so please tell me why.

thanks

tex450
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Old 08-24-2010, 04:29 PM
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how do you feel about your current ability to accelerate from stop with a load, and or pass someone with a load.. the lower the gear, the harder the drivetrain has to work.. and slower the change will happen..

so you wil be max, 10+6k, or 16k.. double the typical truck weight (F350 I mean)..
I wouldn't go less than 3.73

sam
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Old 08-24-2010, 05:41 PM
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Quote:
Originally Posted by kylebryan View Post
you can go ahead and kiss your mileage goodbye with the 6.4. especially if you have a 450 witht the 4.88 gears. I get about 12-13 in town running a spartan 250hp tune with the DPF off. highway mileage is about 16-17 but im running an F-250 with 3.73 gears in it. Those numbers are completely unloaded and hand calculated.
Have you run the 275 tune? I have run both the 250 and the 275 and the 275 gets me another 1-2 mpg. I know that the 275 disables the EGR valve which adds to the MPG. I however, get tired of the firm shifting and prefer the softer 210. Just a thought.

Hey Texas,
Good luck with the new truck. Not trying to rain on your parade since I am not familiar with the livewire tuning, but I am familiar with Spartan. The majority of the forum members who are tuned are running the Spartan tunes, and all are extremely happy with them. I don't know of any guys who were tuned by spartan switch to a different company's tune, however, I know of many who dumped their current tune to go with spartan.

So to get the best results I would remove the DPF and the DOC (cat), run a spartan tune (or whatever tune your prefer) and be easy on the 'go' peddle. I think adding the stage II AFE intake will give you a nice sound and maybe a quicker throttle response but in terms of MPG it may actually hurt you slightly. The stock intake is actually a terrifically designed intake, and the main reason anyone removes them is if they are pushing really hot tunes that need a lot of air.
Well good luck and welcome to the forum. You have come to the right place, there are a lot of good people here who will love to help ya out. Now post some pics of the new truck!
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Old 08-24-2010, 07:21 PM
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not sure about the 250 tune but i know for sure the 210 disables the egr valve as well except at idle.
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Old 08-24-2010, 09:14 PM
Texas450 Texas450 is offline
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thanks LAX i guess as far as the mpg goes as long as these mods increase it slightly then anthing more than that is gravy....like i said in my OP i would love to get 15mpg but anthing better than 8-10 will be a welcome improvement.

I get paid to drive my truck all over the USA so when i can save on mpg its like getting a raise.

I drive it easy....always the slowest one when the light turns green. i drive alot of highway miles and usually dont take it over 65 no matter what....i guess i do have my hopes up this weekend when i install everything cause then i will know how much of a raise im going to get this year.....also i drive 50k-75k a year.....
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Old 08-24-2010, 09:19 PM
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we are very interested to hear how it works out for you too.. many of us are anxious to try it as well..

Sam
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