Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > COMMUNITY FORUMS > General Discussion
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
  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 05-03-2010, 09:42 AM   #1
Senior Member
M&Aeller's Avatar
Winnebago Owners Club
Texas Boomers Club
Join Date: May 2007
Location: Anywhere, USA
Posts: 226
TS Performance MP-8

I have a 2005 Winnebago Journey DP with a 350 Cat C7 on a Freightliner chasis. The coach has about 28,000 miles on it and I decided to do something to boost the performance and maybe increase my fuel mileage. I had the full M3 maintenance performed on the engine at 20,000 miles.

First thing I did was open up the air flow to and from the engine. I added a new AFE air filter but rather than put in the same size filter, I installed a larger filter. The OEM filter had a capacity of about 960 cfm and the new larger one has a capacity of about 1550 cfm. The hose size into the old filter was 6" and was 5" coming out but since the the inlet and outlet hose size for the new filter housing was 7", I swaged up at the air intake duct and ran 7" all the way to the new filter and out of the filter and swaged back down to 5" at the engine.

I also replaced my OEM muffler with a new AeroTurbine 5050XL muffler on the exhaust. The inlet and outlet piping size was already 5" so I did not have to make much modification to this system except to do a little cutting to get everthing to fit properly.

By letting the engine breath better I noticed that the coach was a lot peppier. It accelerated quicker and I was able to merge into traffic quicker and was able to pass slower traffic quicker. The trans also seeemed to downshift faster and it got to 6th gear faster than before, but this may be a figment of my imagination since I did not take notes on this before.

The final thing that I did was to install a TS Performance MP-8 chip to the engine. So basically I added the 3 items that seem to be the most recommended in many of the threads on this forum. I cranked up the setting to the full 30% to see how the engine performed. Last weekend I drove about 50 miles to a campground where we stayed for the weekend. After I got there I noticed a lot of soot on the coach just above the tailpipe. I never had soot on the coach before, so I washed it off. Then on the way home I noticed that when I started up from a dead stop, like at at stop sign, the exhaust would belch out a big cloud of black sooty exhaust just like you see from city buses and 18 wheelers. Black exaust means unburned hydrocarbons which means poor combustion in the engine. question is this. Is this the normal operation with the MP-8?? If not, what is going on here?

I turned the MP-8 setting back to the stock setting (which basically deactivates the chip). When I drove the coach back to the storage lot, I did not notice black soot belching out of the tailpipe anymore but I did notice just a hint of dark exhaust when starting from a dead stop. Again I never looked for this before so I dont know if this is the normal operation of a diesel engine. As I said, I never had soot on the rear of the coach before.
M&Aeller is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free! 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 05-03-2010, 11:48 AM   #2
Registered User
Join Date: May 2005
Location: Milford,CT.
Posts: 2,237
I dont know anything about the MP-8 But my TS flip chip will smoke like a freight train in the 140hp race setting. To get rid of the smoke bigger injectors,turbo. What size is your exhaust?? Can you return te MP-8? If so I would call DP Tuner and talk to Jody he is the top in the game with these things.
mike brez 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
Brazels RV Performance "Helwig Special" DriVer Vendor Spotlight (Deals, Announcements & More) 1 02-11-2010 12:39 AM
Brazel's RV Performance at GNR Brazel's RV Performance Winnebago International Travelers Club (WIT) 0 07-17-2009 06:02 PM
Ultra Performance, Ultra Service and Now Ultra Camping DriVer RV Industry Press 13 05-16-2009 08:20 AM
Understanding Coach/RV Performance Joe-K Freightliner Motorhome Chassis Forum 9 04-25-2006 03:39 PM
W25.5 & Workhorse Products Hit RV Show with More Capacity, Power and Performance DriVer RV Industry Press 1 12-01-2005 05:00 AM

» Featured Campgrounds

Reviews provided by

All times are GMT -6. The time now is 11:39 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2023, vBulletin Solutions, Inc.