2008 lifted f250 MPG - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 18 (permalink) Old 03-27-2012, 01:20 AM Thread Starter
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2008 lifted f250 MPG

Hello to everyone. I've been a long time "lurker", but finally decided to post my question and give my MPG for anyone to use as a comparison. I have a 2008 F250 6.4 lifted 6in w/ 2 in spacers, 37 13.5 20 aggressive ATs, roof rack, cat/dpf delete, Superchips tuner etc. i've had the truck for a few months now and have hand calculated EVERYTHING. My first question is that my computer read out says I'm getting around 17 to 22mpgs. I was ecstatic about this until I calculated by hand. Consistently, I am getting 13.5 mpg in town, and a trip to and from NC (from Tampa without roof rack) I get 13.8 mpg. So essentially I am getting the same MPG on highway as in the city. I'm a careful driver and have a soft right foot. On the interstate I cruise around 75mph


Questions:
Why is my digital read out so far off?
Can I fix it to refelct a true readout? (i already have the tuner set to fuel saver and adjusted the tire size)
Does anyone else have a similar setup and can give me their MPG?
I know I can take off the roof rack and shrink the tires for better MPGS, but I like it the way it is now.
Any other ways i can try to improve fuel economy....without taking anything off my truck?
Thanks in advance. And here's a couple pics of my new baby!



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post #2 of 18 (permalink) Old 03-28-2012, 09:55 PM
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Re: 2008 lifted f250 MPG

A tuner befuddles the lie-o-meter.

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 #3 of 18 (permalink) Old 03-29-2012, 02:00 AM
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Re: 2008 lifted f250 MPG

That seems like good milage for your truck. I get 14 on average with 35s, dpf delete and about 50/50 highway and city

2015 F250 Lariott
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post #4 of 18 (permalink) Old 03-29-2012, 02:13 AM
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Re: 2008 lifted f250 MPG

I would look into a different tuner

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post #5 of 18 (permalink) Old 03-29-2012, 06:51 PM
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Re: 2008 lifted f250 MPG

Considering that you've done about everything else wrong from the standpoint of MPG, probably your sensible driving is all that saves you from 11-odd MPG results.

Another tuner won't change anything.

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 #6 of 18 (permalink) Old 03-29-2012, 09:38 PM
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Re: 2008 lifted f250 MPG

I disagree with that

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post #7 of 18 (permalink) Old 03-30-2012, 05:01 PM
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Re: 2008 lifted f250 MPG

By all means, prove me wrong. I can arrange for time to do some road trips.

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 #8 of 18 (permalink) Old 03-31-2012, 02:04 AM
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Re: 2008 lifted f250 MPG

its almost proven that different tunes will gain mpg's? idk how you can disagree with that

2009 CCSB Black
6.4

12.6 @ 109 1/4 mile
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post #9 of 18 (permalink) Old 03-31-2012, 02:17 AM
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Re: 2008 lifted f250 MPG

It has been proven that better tuning will alter the mileage a 6.4 will get. 13-14 is not bad at all for what you have. My leveled ccsb 08 with 20's on 35 mud grapplers will get 15.2-16.5mpg depending on interstate or mixed back road and highway. Up from 7 I was getting before the tuner. All hand calculated, When I had an sct with KEM tunes the lieo-meter said 42mpg and I was getting 19-21, the mini maxx on this crew cab is almost spot on, But that still has canned tunes. I had an sct with IDP tunes on another truck and it would get 17-18mpg but trip meter said 22-24.

Here is a test a friend of mine did comparing two custom tuners to show mileage he got with both on a several thousand mile road trip.
MPG log - PowerStrokeNation : Ford Powerstroke Diesel Forum

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post #10 of 18 (permalink) Old 03-31-2012, 02:32 AM
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Re: 2008 lifted f250 MPG

Quote:
Originally Posted by Dave Whitmer View Post
By all means, prove me wrong. I can arrange for time to do some road trips.
Your truck or a 6.4?

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