08' f450 looking for input on performance for fuel mileage - Ford Powerstroke Diesel Forum
6.4L Performance Parts Discussion What has or has not worked for you?

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post #1 of 21 Old 10-19-2012, 03:07 PM Thread Starter
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Smile 08' f450 looking for input on performance for fuel mileage

i have had my 2008 ford f450 6.4l now for a few months and i been doing research on things to do for better fuel economy. i average around 13mpg as of now. ive seen dpf/cat deletes, and tunes to turn off regen. is this the rout to go? and if i do that is it suggested to put a better air cleaner setup in her? i am happy with the power she has now i just see from my research that if i let her breathe then its better fuel econemy and hp so i just want some opinions on what people have done and whats the best setup to intall.. i appreciate the help in advance!!!
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post #2 of 21 Old 10-19-2012, 08:38 PM
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Tuner, cai, and full exhaust improved my mileage 3-4 mpgs. I also drive extremely conservative and add cetane boost in every tank.

08 F250 KR
08 F250 XL
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post #3 of 21 Old 10-19-2012, 09:13 PM
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what gears do you have?

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post #4 of 21 Old 10-20-2012, 01:48 AM Thread Starter
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Honestly not to sure I drive conservative for the most part as well, my first newbie mistake was gettin a diablo sport predator . Got it from a friend for $100 and no one will buy it from me so the day I have the cash to get a delete pipe and tuner I guess it'll be a paper weight. I really don't know what I have for gears, where would I find that? A code of the diff?
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post #5 of 21 Old 10-20-2012, 02:27 AM Thread Starter
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What is a cai?
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post #6 of 21 Old 10-20-2012, 03:27 AM
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Cold air intake

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post #7 of 21 Old 10-20-2012, 04:02 AM Thread Starter
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Oh ok. Don't kno the slang terms yet haha. Sick pic man
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post #8 of 21 Old 10-20-2012, 11:18 AM
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if i had to guess your gear ratio is probably 430. excellent for heavy loads. not so great for fuel eco. you could offset a little by going a little taller on the tires.

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post #9 of 21 Old 10-20-2012, 12:07 PM
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Quote:
Originally Posted by Gliddd View Post
i have had my 2008 ford f450 6.4l now for a few months and i been doing research on things to do for better fuel economy. i average around 13mpg as of now. ive seen dpf/cat deletes, and tunes to turn off regen. is this the rout to go? and if i do that is it suggested to put a better air cleaner setup in her? i am happy with the power she has now i just see from my research that if i let her breathe then its better fuel econemy and hp so i just want some opinions on what people have done and whats the best setup to intall.. i appreciate the help in advance!!!
Im deleted with 3.73's and 33" tires and i dont even get 13 mpg. more like 11-12mpg

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post #10 of 21 Old 10-20-2012, 05:06 PM Thread Starter
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I didn't buy the truck to be Eco friendly haha. But just want to take the steps necessary to kno I'm doin everything possible to get the most mpg possible outta the ol girl. Thanks for the input
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