Go Back   iRV2 Forums > POWER TRAIN GARAGE FORUMS > Caterpillar Engine Forum
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
 
Thread Tools Search this Thread Display Modes
 
Old 07-18-2012, 10:22 PM   #1
Senior Member
 
Ramzfan's Avatar


 
Winnebago Owners Club
Freightliner Owners Club
Join Date: Dec 2010
Posts: 730
Improved MPG with an MP-8 ?

Has anyone seen their MPG's improve with the addition of an MP-8? I have been searching the threads here but have not found one person that says it improved their mileage...
__________________

__________________
06' Itasca Meridian 36g with CAT 350
2011 Jeep Wrangler 4-door
Ramzfan 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 07-18-2012, 10:42 PM   #2
Senior Member
 
Mr_D's Avatar
 
Solo Rvers Club
iRV2 No Limits Club
Join Date: May 2011
Location: Vancouver, WA
Posts: 28,103
To get accurate mileage figures you have to check over long terms. Cummins says 140,000 miles. I don't think anyone has run their rig with a chip long enough to get figures!
__________________

__________________
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft
Charter Good Sam Lifetime Member, FMCA, SKP
RV'ing since 1957, NRA Benefactor Life, towing '14 CR-V
Mr_D is offline   Reply With Quote
Old 07-19-2012, 10:07 AM   #3
Senior Member
 
Ramzfan's Avatar


 
Winnebago Owners Club
Freightliner Owners Club
Join Date: Dec 2010
Posts: 730
I'm not trying to get "super-accurate" mileage figures...I would just like to know if someone has installed the MP-8 and checked their mileage for 2-3 thousand miles. Has it improved...?
__________________
06' Itasca Meridian 36g with CAT 350
2011 Jeep Wrangler 4-door
Ramzfan is offline   Reply With Quote
Old 07-19-2012, 11:02 AM   #4
Senior Member
 
1ciderdog's Avatar


 
Join Date: Jun 2010
Posts: 4,320
I've driven mine with the MP-8 more than 2 or 3000 miles and I don't see a noticible increase in mpg but I do see me going up a grade a bit faster. I'm not racing but going up a long grade at 40 or 45 mph seems better than doing that same grade at a slower speed. I've had power chips in three different diesel engines and they all increase power and claim to increase mpg. Just my opinion but I'd suspect if you actually drove at the same speeds as before installing an MP-8 it would improve mpg but not if you use the extra horsepower as most of do or will do.
Bob
__________________
Bob, Sandi & Marmaduke the Big Pug
SW OREGON 2004 Journey 39K, 330 Cat
If towing: a 2006 Mini Cooper or 1995 Wrangler
1ciderdog is offline   Reply With Quote
Old 07-22-2012, 10:47 PM   #5
Senior Member
 
OLYLEN's Avatar
 
Monaco Owners Club
Join Date: Jan 2008
Location: Olympia, Wa
Posts: 2,304
There ya go, if you got the power use it. I found a moderate increase in MPG up to 1.5 over the same ground and fueling stations. But going up hill I am up one gear and a lot of no down shifting on moderate hills, which means I am most likely in those time using the same fuel as before the MP8 . The biggest problem is accounting for gen time, know the time but what is the fuel flow, gen uses between .5 and about .9 per hour. But when you use 20-40 hours even over several thousand miles ???????????. I think if a person could control their right foot one would see everall a 1.5 increase in MPH but that is pure(maybe slightly educated) experience.

LEN
__________________
2004 Clss C 31' Winnebgo
OLYLEN is offline   Reply With Quote
Old 07-23-2012, 02:24 AM   #6
Senior Member
 
historyljc's Avatar
 
Tiffin Owners Club
Freightliner Owners Club
Join Date: Feb 2008
Location: Pensacola, Florida
Posts: 5,173
Just a word of caution. If you're covered by a warranty, factory or extended, check it carefully. My extended warranty if void if I add a chip.
__________________
Travel well, travel safe,
Jim
2006 Tiffin Phaeton - 2011 Cadillac SRX
historyljc is offline   Reply With Quote
Old 07-23-2012, 11:06 AM   #7
Senior Member
 
wa8yxm's Avatar
 
Damon Owners Club
Workhorse Chassis Owner
Join Date: Mar 2009
Posts: 22,654
Rgarding warranties... There are "Chips" and there are "Chips".

Some companies, Like Ultra Power and Banks, stand behind their upgrades, and they have done their research and the chip/upgrade should "Do no harm" as they say.

Others, .. Well others are not so good.

The warranty act says basically this: IF your modifications caused the damage then, Tough luck sucker. But if the problem was NOT caused by your "Upgrade" warranty applies.

Alas, the problem is the company has the high powered lawyers.
__________________
Home is where I park it!
wa8yxm is offline   Reply With Quote
Old 09-23-2012, 10:24 AM   #8
Senior Member
 
Monaco Owners Club
Join Date: Feb 2011
Location: Signal Hill, California
Posts: 3,292
My mileage doubled. deSanford
__________________
Sanford, Linda & R cats: Molly, Levi, Cody
2011 Monaco by Navistar RV
Good Sam Life Member Good Sam Hams Chapter
deSanford is offline   Reply With Quote
Old 09-23-2012, 10:35 AM   #9
Senior Member
 
Mr_D's Avatar
 
Solo Rvers Club
iRV2 No Limits Club
Join Date: May 2011
Location: Vancouver, WA
Posts: 28,103
Darn, I only got a 75% increase with the Banks kit!!
__________________
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft
Charter Good Sam Lifetime Member, FMCA, SKP
RV'ing since 1957, NRA Benefactor Life, towing '14 CR-V
Mr_D is offline   Reply With Quote
Old 09-23-2012, 12:12 PM   #10
Registered User
 
Fleetwood Owners Club
Freightliner Owners Club
Join Date: May 2011
Location: Silicon Valley, CA
Posts: 1,857
I don't think it's going to help me then

According to the attached picture if my mileage doubled I'd have to drain fuel out of the tank!

But seriously folks, Absolute power corrupts absolutely. If the power's there you're going to use it. All chips work the same way - more fuel when you 'get into it'. Can you resist 'getting into it'?

The other thing that chips do is to totally mess up the real time and agerage mileage calculations, like the one in the picture.

I put a chip in my F250 and it consistantly reads 5 or more MPG higher than actual. If you didn't calculate it by hand you'd never know. But it sure is fun to blow some black smoke into a tailgaiters window!
Attached Thumbnails
Click image for larger version

Name:	IMG_1777.jpg
Views:	149
Size:	218.1 KB
ID:	26494  
__________________
Muddypaws is offline   Reply With Quote
Old 09-24-2012, 12:35 AM   #11
Senior Member
 
Monaco Owners Club
Join Date: Feb 2011
Location: Signal Hill, California
Posts: 3,292
On this particular cummins engine ISB340 6.7L the MP-8 with fuel pressure kit does in fact double the MPG driving in 6th gear overdrive in ECON mode with cruise control on at 55 mph rpm @ 1350. Verified with Linear Logic Scan Gauge "D". deSanford
__________________
Sanford, Linda & R cats: Molly, Levi, Cody
2011 Monaco by Navistar RV
Good Sam Life Member Good Sam Hams Chapter
deSanford is offline   Reply With Quote
Old 09-24-2012, 02:21 AM   #12
Senior Member
 
Tony Lee's Avatar
 
Join Date: Sep 2012
Location: Peru heading for Brasilia, Brazil
Posts: 2,102
Quote:
Originally Posted by deSanford View Post
On this particular cummins engine ISB340 6.7L the MP-8 with fuel pressure kit does in fact double the MPG driving in 6th gear overdrive in ECON mode with cruise control on at 55 mph rpm @ 1350. Verified with Linear Logic Scan Gauge "D". deSanford
Double!!

Verified???
__________________
Tony Lee - International Grey Nomad. Picasa Album - Travel Map
RVs. USA - Airstream Cutter; in Australia - MC8 40' DIY Coach conversion & OKA 4x4 MH; in Germany - Hobby Class C; in S America - F350 with 2500 10.6 Bigfoot camper
Tony Lee is offline   Reply With Quote
Old 09-24-2012, 11:38 AM   #13
Registered User
 
Fleetwood Owners Club
Freightliner Owners Club
Join Date: May 2011
Location: Silicon Valley, CA
Posts: 1,857
Verified?

Your ECM and ScanTool both do calculations based upon what's in the computer, i.e. the manufacturers stock fueling map. But the fueling map you're actually running is contained only in the chip. If you're verifying your numbers any way other than with hand calculations you are being misled. Even the 'mileage guesser' in an unmodified vehicle is usually off. Sometimes way off.
__________________
Muddypaws is offline   Reply With Quote
Old 09-24-2012, 08:19 PM   #14
Senior Member
 
jauguston's Avatar
 
Join Date: Jul 2006
Location: Bellingham,WA
Posts: 973
Sanford,

You better get your pencil fuel mileage calculator busy. The fuel mileage average displayed on your Scangauge is totally bogus if your MP-8 is turned up. Mine is reading approximately double the actual mileage.

Jim
__________________

__________________
2005 Sportscoach Elite 40' C-7 350 Cat w/MP-8
Suzuki Samurai toad w/VW 1.6 turbo diesel
800w solar system
jauguston 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


» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 06:53 AM.


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