Need Some Advice - Ford Powerstroke Diesel Forum
6.0L Performance Parts Discussion What has or has not worked for you?

Powerstroke.org is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 03-19-2012, 11:42 PM
Member
 

Join Date: Dec 2011
Posts: 46
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Need Some Advice

Ok guys heres the run down first,
2006 F250 ccsb, 3.73 rear end, 6 inch lift on 37's
Studded, egr delete, egr cooler blocked off, MBRP dual exhaust no cat. K&N air intake

Powermaxx turbo, airdog II, Vivan tune (looney), stock injectors

I've had Vivan re-due the tune 3 times due to turbo lag and shuttering at low rpm. (by the way great service) and it is running very well at this time.

Here is my question....

From what I am reading, there is a little turbo lag with the Powermaxx and I will have to except that. But What I am having trouble living with is the POOR mileage. I have not done any highway with the truck since I bought it due to where I live and most of my driving is city. But in the future it will be city 70% highway 30%. Quick hand calculations with all the above is around 10 mpg. I am correcting for the rolling mass of the tires when I do hand calcuations.

Any ideas why my mileage is so bad? Are the tires too big for the gears? Is the airdog II just dumping too much fuel? Does the FICM hurt mileage? Is my Colorado 5500 ft altitude hurting mileage....PLEASE HELP!
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 03-19-2012, 11:47 PM
Compression Ignition Addict
 

Join Date: Mar 2011
Location: Outer Banks
Posts: 891
Thanks: 1
Thanked 4 Times in 4 Posts
Feedback Score: 0 reviews
You can read my mods in my sig, and im running 3.73s. On the high way, even in the mountains i get 16 to 17. Around town im gettin around 14 but that also depends on my foot.
Reply With Quote Quick reply to this message
  #3  
Old 03-20-2012, 12:04 AM
Member
 

Join Date: Dec 2011
Posts: 46
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
I am purposely driving it like a grandma, every once in a while giving it beans. Was that post to make me jealous about my mileage?
Reply With Quote Quick reply to this message
  #4  
Old 03-20-2012, 12:07 AM
Compression Ignition Addict
 

Join Date: Mar 2011
Location: Outer Banks
Posts: 891
Thanks: 1
Thanked 4 Times in 4 Posts
Feedback Score: 0 reviews
No not at all, something is deff not right with your mileage thats all i meant. Have you tried going back to stock and see if there is a difference?
Reply With Quote Quick reply to this message
  #5  
Old 03-20-2012, 12:10 AM
Member
 

Join Date: Dec 2011
Posts: 46
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Yea when I bought the truck it has a bad tune it in but the truck returned 13.5 at best during my 1200 mile drive home. Put the stock tune in and contacted Vivan. The truck was doing the same 10 mpg city with the stock tune.
Reply With Quote Quick reply to this message
  #6  
Old 03-20-2012, 12:15 AM
Compression Ignition Addict
 

Join Date: Mar 2011
Location: Outer Banks
Posts: 891
Thanks: 1
Thanked 4 Times in 4 Posts
Feedback Score: 0 reviews
I was only trying to give you a comparable, 6.0s are better on gas than my 7.3 plus i have 8" lift and 40s so you should be killin me on mileage. I dont think the elevation has that much to do with it. A buddy who has an 04 and i went to the mountains at chistmas and he got better mileage than i did, he had 6" and not sure about his tires.

Sorry i couldnt help.
Reply With Quote Quick reply to this message
  #7  
Old 03-20-2012, 12:18 AM
Compression Ignition Addict
 

Join Date: Mar 2011
Location: Outer Banks
Posts: 891
Thanks: 1
Thanked 4 Times in 4 Posts
Feedback Score: 0 reviews
It might be too late for alot of responce tonight but i bet the 6.0 guys will chime in 2maro and help ya out.
Reply With Quote Quick reply to this message
  #8  
Old 03-20-2012, 12:19 AM
Member
 

Join Date: Dec 2011
Posts: 46
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
I appreciate it, i'm hoping someone has some idea on what to do
Reply With Quote Quick reply to this message
  #9  
Old 03-20-2012, 09:12 AM
Compression Ignition Addict
 

Join Date: Jun 2008
Location: Naperville IL
Posts: 573
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Ficm will effect mpg, I get 12 in town on winter fuel on 35"s, high teens hwy @ 75 (sometimes 0ver 20 mpg) wind and fuel quality and tempurature all impact mpg. My PHP FICM tune was worth 1-2 mpg over a later flash.
Reply With Quote Quick reply to this message
  #10  
Old 03-20-2012, 11:38 AM
Turbos = Witchcraft
 

Join Date: Jul 2011
Location: West Bend, WI
Posts: 2,842
Thanks: 2
Thanked 29 Times in 14 Posts
Feedback Score: 3 reviews
What do you mean by correcting for the rolling mass of the tire? Is your speedo (ad therefore your odometer) recalibrated for the larger tire?
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -8. The time now is 12:05 AM.


Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.1
Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

vB.Sponsors