RV Trip Planning Discussions

Go Back   iRV2 Forums > POWER TRAIN GARAGE FORUMS > Cummins Engines
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Thread Tools Search this Thread Display Modes
Old 04-10-2014, 11:42 PM   #1
Junior Member
Join Date: Mar 2014
Posts: 5
Considering boosting my 330 Cummings

Just bought a 2004 monaco diplomat with a 330 cummings. It seems a little weak for power. I was told you could boost the power with a computer adjustment. Is this true and what should I have it turned to. Is this a good idea.

virgilstem 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 04-10-2014, 11:47 PM   #2
Senior Member
Smitty77's Avatar
Join Date: Aug 2010
Location: Over the next hill, around the next curve...
Posts: 3,812
If rear radiator ISC 8.3, check out fan kit from Source Engineering. Might be all you need.


Roo II is our 04 Country Coach Allure 40'
OnDRoad for The JRNY! Enjoy life...
Smitty77 is offline   Reply With Quote
Old 04-11-2014, 06:08 AM   #3
Senior Member
jd956jd956's Avatar
Join Date: Jan 2011
Location: Near Kingwood, Texas
Posts: 712
Considering boosting my 330 Cummings

Check out "results of straight pipe installation" in the cummins powertrain section for a very simple and inexpensive means of more power and better performance

1997 American Eagle
2013 FJ Cruiser 4x4 Toad
Jeff & Sandy near Kingwood, Texas
2016 Newmar Essex 4519 / 2013 FJ Cruiser 4x4 Toad
1997 American Eagle no more, but was outstanding
jd956jd956 is offline   Reply With Quote
Old 04-11-2014, 07:25 AM   #4
Mr. Hipster's Avatar
Join Date: Jan 2014
Location: Milwaukee area/central Idaho
Posts: 93
Keep the radiator and cac real clean, simple green and brake kleen are your friends.
Mr. Hipster is offline   Reply With Quote
Old 04-11-2014, 08:56 AM   #5
Senior Member
OLYLEN's Avatar
Monaco Owners Club
Join Date: Jan 2008
Location: Olympia, Wa
Posts: 2,740
Also the MP8 can be installed. One rotary knob and you can up the no and torque 15%. I have had one on a Cat for 25000 miles and added a few gauges to see all is well. Do a search on t h e NP8 and get all kinds of info.

2004 Clss C 31' Winnebgo
OLYLEN is offline   Reply With Quote
Old 04-12-2014, 01:00 PM   #6
Senior Member
BRex45's Avatar
Join Date: Jul 2011
Posts: 636
When/if you search for add-ons for your rig, be sure to spell your engine make: Cummins, not Cummings. You will most likely get more search results.
Named after Clessie CUMMINS

'97 Country Coach Intrigue
BRex45 is offline   Reply With Quote
Old 04-12-2014, 10:32 PM   #7
Senior Member
Ray,IN's Avatar
Join Date: Aug 2001
Location: North America somewhere
Posts: 15,420
The limiting factor is the Allison transmission torque limit. http://www.allisontransmissionpublic...d.ashx?did=740
Down about 2/3 of this pdf you'll find transmission specs.
2000 Winnebago Ultimate Freedom USQ40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG retired;Good Sam Life member,FMCA."We the people are the rightful masters of both the Congress and the Courts - not to overthrow the Constitution but to overthrow men who pervert the Constitution. "Abraham Lincoln"
Ray,IN is offline   Reply With Quote
Old 04-21-2014, 11:09 AM   #8
Join Date: Nov 2003
Location: Fulltimers from - Simpsonville, SC, USA
Posts: 84
Had mine reprogrammed from 330 to 350 and definitely noticed a performance change. It will climb hills better now thanks to an additional 100 lbs of torque and the fuel mileage has improved 1/2 to 1 mpg. Just make sure you give the Cummins place your engine CPL (critical parts list) to make sure you don't over stress your drivetrain. Wished I had done it years ago. Good luck!
'99 Alpine
36' FDS
gmfryer is offline   Reply With Quote
Old 04-21-2014, 11:43 AM   #9
Registered User
mel s's Avatar
Join Date: Mar 2010
Posts: 8,777
Originally Posted by Mr. Hipster View Post
Keep the radiator and cac real clean, simple green and brake kleen are your friends.
Mr. Hipster
Simple Green® Original/All-Purpose is NOT safe, or recommended by the manufacturer, for cleaning aluminum.
Simple Green® Extreme
is the recommended product.
'96 Safari, (w/alum. radiator)

mel s is offline   Reply With Quote

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
M40PBD 2001 Monaco 330 question Maxm Class A Motorhome Discussions 15 03-12-2014 05:43 AM
CC Detroit 330 purchase. Mike_Harriet Country Coach Owners Forum 21 02-05-2014 01:12 PM
Oil pressure 330 jimbo2013 Caterpillar Engine Forum 7 01-20-2014 09:22 PM
Performance chip for cummins 330? DanandBetty Cummins Engines 22 12-30-2013 12:45 PM
ISC 330 Cummins Valve Adjustments DocUSAF Cummins Engines 2 09-09-2013 03:01 PM

» Featured Campgrounds

Reviews provided by

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 08:56 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.