Go Back   iRV2 Forums > TRAVEL TRAILER, 5th WHEEL & TRUCK CAMPER FORUMS > Trailer Towing and Tow Vehicles Discussion
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 03-27-2014, 11:05 AM   #1
Junior Member
 
Join Date: Dec 2013
Posts: 3
F450 upgrades to improve MPG

I have a 2008 Ford F450 and will be towing a 5th wheel with a GVWR of 15,500. I was told by moving to a 4" exhaust and putting in a K&N Intake system would help. Thoughts?

Thanks,
Bodiemax
__________________

__________________
Bodiemax is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 03-27-2014, 11:22 AM   #2
Senior Member
 
Join Date: Jan 2000
Location: Castle Rock Co USA
Posts: 383
It will make a difference in felt power-will do nothing for MPG.
__________________

__________________
2011 Montana-3400RL
Towed by[B]'99 F-350 SD PSD DRW Lariat
RichR is offline   Reply With Quote
Old 03-27-2014, 11:35 AM   #3
Senior Member
 
Walt Bennett's Avatar
 
Mid Atlantic Campers
Join Date: Sep 2012
Posts: 295
Thought so myself until I searched around some. The Ford intake air filter is really good stock and also does a good job filtering. K&Ns only advantage is that you can clean them, but they don't do as good a job filtering as stock, and don't pass much more air either. You'd be better off getting a custom tune than either of these.
__________________
2010 Montana 3665RE, wet bolts, etc.
2006 Ford F350 Diesel Dually, air bags, Softopper, Aeroshild, etc.
Walt Bennett is offline   Reply With Quote
Old 03-27-2014, 11:40 AM   #4
Member
 
bsjulestad's Avatar
 
Texas Boomers Club
Forest River Owners Club
Join Date: Oct 2011
Location: Mansfield, TX
Posts: 32
Quote:
Originally Posted by Walt Bennett View Post
Thought so myself until I searched around some. The Ford intake air filter is really good stock and also does a good job filtering. K&Ns only advantage is that you can clean them, but they don't do as good a job filtering as stock, and don't pass much more air either. You'd be better off getting a custom tune than either of these.
I agree, I was told not to use K&N filter on my dmax.
__________________
Bob & Dianne
2014 GMC Denali 3500HD 4x4 DRW Duramax
2014 Cedar Creek 36ckts
bsjulestad is offline   Reply With Quote
Old 03-27-2014, 12:15 PM   #5
Senior Member
 
stuhly's Avatar
 
Fleetwood Owners Club
Join Date: Jan 2010
Posts: 1,291
And number one is only drive on roads that are downhill and only on days with a tailwind. Fuel mileage goes way up.
__________________
stuhly is online now   Reply With Quote
Old 03-27-2014, 12:53 PM   #6
Senior Member
 
Join Date: Sep 2012
Posts: 4,232
You do know that your truck has a DPF/DOC on the exhaust, right? That is your restriction. So to get any improvement with exhaust systems, you need a full DPF/DOC delete with a turbo back system and then you have to tune it to program out the regens.
Stock intake is plenty for you.
__________________
jesilvas is offline   Reply With Quote
Old 03-27-2014, 01:19 PM   #7
Senior Member
 
Cypressloser's Avatar
 
Join Date: Sep 2013
Location: Alberta - East of the Rockies, West of the Rest
Posts: 650
I kind off agree with jesilvas but only if the truck is out of warranty.
We had a 2008 F450 King Ranch and the fuel mileage sucked, I chipped it tried this and that but everything was a complete waste of money. We finally bit the bullet and traded it for a 2013 RAM 3500 with similar weight and towing capacities but huge fuel savings - I love that truck.
Please don't shoot me now
__________________
Cypressloser is online now   Reply With Quote
Old 03-27-2014, 03:09 PM   #8
Senior Member
 
Join Date: Sep 2012
Posts: 4,232
Quote:
Originally Posted by Cypressloser View Post
I kind off agree with jesilvas but only if the truck is out of warranty.
We had a 2008 F450 King Ranch and the fuel mileage sucked, I chipped it tried this and that but everything was a complete waste of money. We finally bit the bullet and traded it for a 2013 RAM 3500 with similar weight and towing capacities but huge fuel savings - I love that truck.
Please don't shoot me now
Did you actually delete the DPF/DOC?
What "chip" was it, tried what and tried that what?
__________________
jesilvas is offline   Reply With Quote
Old 03-27-2014, 03:58 PM   #9
Senior Member
 
Cypressloser's Avatar
 
Join Date: Sep 2013
Location: Alberta - East of the Rockies, West of the Rest
Posts: 650
No, neighbor did on his 2009 f350 his fuel mileage improved around 20% and he got rid of the annoying 'regen' which also burns fuel. Don't quote me on the exact wording but he removed parts of the exhaust system and made changes to the computer so it wouldn't look for the missing sensors.
I did try the Superchips programer, air intake and other little things and I constantly had the 'check engine' light on because of not enough restriction in the air intake and I was told at the dealership that even the K&N filter could? void the warranty on the engine.
Where I noticed a small improvement was when I switched to synthetic engine oil.
I went from 13 mpg/US on the Ford to 17mpg/US highway on the Dodge where the Dodge has a similar towing capacity as the Ford but with 3.73 differentials instead of 4.3 and lots of power to spare.
__________________
Cypressloser is online now   Reply With Quote
Old 03-27-2014, 05:08 PM   #10
Senior Member
 
caissiel's Avatar
 
Join Date: Oct 2011
Posts: 1,312
My best fuel mileage improvement is when I tried to keep the turbo pressure below 10psi.
I use the ScangaugeII. Calibrated properly and observe all situations.
To keep the turbo pressure lower I have the Hypertech max energy set to level 3 at 125 HP and everything runs clean.
Any other programers except Banks will just dirty the exhaust and it will cycle cleaning more often.

The Ford air filter is the best and you need the stock exhaust. I would worry about exhaust at higher then 3000 RPM. So does air filters.
For towing keep it stock and find a way to pull with lower turbo pressure.
I can see constant 40 mpg on steady speed on the highway at 65 mph.
Towing I see 15 mpg and average better then 12.
Get the ScangaugeII 1st and experiment. You need it anyway if you drive a Power Stroke and the pay back on fuel will never be by trading because the programmed 6.4 performs as well as the 6.7.
__________________
Barbara and Laurent, Hartland Big Country 3500RL. 39 ft long and 15500 GVW.
2005 Ford F250 SD, XL F250 4x4, Long Box, 6.0L Diesel, 6 Speed Stick, Hypertech Max Energy for Fuel mileage of 21 MPusG empty, 12.6 MPusG pulling the BC. ScangaugeII for display..
caissiel is offline   Reply With Quote
Old 03-27-2014, 05:24 PM   #11
Registered User
 
Join Date: Mar 2013
Posts: 1,919
Any of the newer trucks that have DEF will have a much better improvement of MPG compared to trucks that only go through regen. When Ford came out with the 6.7L the mileage increased substantially compared to the 6.4L. I have heard of many 6.4L owners getting rid of the DPF and going with a good programmer and getting better than 20 MPG. The added benefit to getting rid of the DPF is the lack of fuel getting sprayed on the exhaust stroke and preventing oil grow from fuel in the engine oil.
__________________
jamesrxx951 is offline   Reply With Quote
Old 03-28-2014, 07:18 AM   #12
Junior Member
 
Join Date: Dec 2013
Posts: 3
Wow!!! Thank you for all of the great responses. I need to research some of the options posted because I'm only averaging 10.7mpg's without towing anything. I will share what we decide to do and any improvements(or not) we see.

Thanks,
Bodiemax
__________________
Bodiemax is offline   Reply With Quote
Old 03-28-2014, 03:08 PM   #13
Senior Member
 
Join Date: May 2011
Posts: 188
I guess someone should point out the fact that all the pollution-equipment deletes can:

---cause you to fail inspections in some states
---prevent some trade-ins
---is breaking the law and subjects you to penalties

The manufacturers of this type of equipment are under investigation and are subject to penalties for producing things that are unlawful and which bypass attempts to improve the environment.

Just said to keep things fair and balanced.
__________________
Airstreamer6 is offline   Reply With Quote
Old 03-28-2014, 03:45 PM   #14
Senior Member
 
wingnut60's Avatar
 
Join Date: Aug 2004
Location: Wherever the Suites is
Posts: 2,986
Bodiemax,
I have an '09 450--at around 97000 miles, I had the DPF taken off and an H&S MiniMax tuner installed. At around 135000, I had the rest of the exhaust removed and replaced with a 4" system from the downpipe back, with an MBRP muffler in the system. Now at 168000, I have NOT seen the spectacular increases in MPG that some claim, but don't have to worry about the regen kicking in while climbing Monarch Pass, or the oil level climbing above full, or that darned "drive until exhaust is clean" message as I get home. The oil now stays mostly clear thru the 5k change intervals. If you wanted to try one, a GearVendor overdrive MIGHT help, but you would never recover the cost. These trucks are heavy and boxy, just have to live with it. Keep the rpms below 1900 solo will help some, and watch the boost gauge to keep it from jumping to 30+.
Joe
__________________

__________________
'15 38RSSA Mobile Suites
'05 36TK3 Mobile Suites--retired but not forgotten
'17 F450--trying one more Ford
'09 F450--died, replaced with '10--retired
wingnut60 is offline   Reply With Quote
Reply



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not 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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Diesel fuel mileage (MPG) seems low crewstx Trailer Towing and Tow Vehicles Discussion 18 03-26-2014 06:52 PM
Cummins ISX Achieves 10.7 MPG in Latest Test DriVer RV Industry Press 0 02-18-2014 12:44 PM
Slight Improvement in C7 mpg mbrandt1402 Caterpillar Engine Forum 2 01-26-2014 11:30 PM
What should I expect MPG with 45ft MH? CC Rider Class A Motorhome Discussions 55 01-03-2014 09:43 AM
Diesel Break in before MPG improve bobfa Trailer Towing and Tow Vehicles Discussion 21 11-18-2013 09:50 PM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 07:47 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.