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Topic: Muffler (Read 885 times) previous topic - next topic

Muffler

I replaced my muffler.  I got the replacement from FT.  It is different than the old one.
We had to do some fabrication to make it work.
The only problem is that it sounds louder when I am accelerating.
Brad from FT said this is the one they are using now.

Any comments
Rick & MJ Berry
1998 U320 40'
Ohio

Re: Muffler

Reply #1 –
Louder generally means less restriction= more power/faster turbo spool up.

Many have moved from the OE very heavy muffler to less restrictive ones.

What make/model are you installing?
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: Muffler

Reply #2 –
It was an Aero brand.  Not sure of any more specifics.

Rick & MJ Berry
1998 U320 40'
Ohio

Re: Muffler

Reply #3 –
Pictures?
Frank & Connie Williams
1999 U320 '36
Build: 5466
MC: 18335

Re: Muffler

Reply #4 –
Aero 50/50? Some of us here have installed thoes.
Richard & Betty Bark & Keiko our Golden Doodle
2003 U320T 3820 PBDS
Build # 6215
MC # 16926
2016 Chevrolet Colorado 4X4 diesel

Re: Muffler

Reply #5 –
Here is the muffler and tailpipe.  It was still under wraps at that point.  We had to shorten the tail pipe and used about 4 90 degree elbows and one 15 degree.  He welded the 3 90 together and used the 15 degree to position the tailpipe out the back.
My chrome pipe at the end was also rusted.  So we just used the curved end of the tailpipe out the  back.
Rick & MJ Berry
1998 U320 40'
Ohio

Re: Muffler

Reply #6 –
Quote from: rbark –
Aero 50/50? Some of us here have installed those.

And if it's a little too loud for you, the Magnaflow is a touch more civilized.

If you search the forum for "resonator" you can read more about the different installations and impressions.  (spoiler - we originally had an Aero 5050 installed on our '03 and swapped for a "Magnaflow Performance Exhaust 12774 Stainless Steel Muffler; 7 in. Round Body").

Looks like the 'Zon has a decent price on the Magnaflow we used  Amazon.com: MagnaFlow 7in Round Center/Center Performance Muffler 12774 -...
As an Amazon Associate Foretravel Owners' Forum earns from qualifying purchases.
Learn every day, but especially from the experiences of others. It's cheaper!  - John C. Bogle

2000 U320 36' non-slide / WildEBeest Rescue
2003 U320

Re: Muffler

Reply #7 –
I have saved that for future reference, if the sound gets on my nerves.

Thanks
Rick & MJ Berry
1998 U320 40'
Ohio

Re: Muffler

Reply #8 –
Michelle, can you give an idea of the sound difference between the Aero and Magnaflow?  I am just getting ready to remove the giant muffler and go the resonator route and have been hesitant because I'm not sure which is the quietest, or maybe better said, least loudest.
Mark & Bev
2001 U295 36' Slide
Cummins ISC 8.3 350HP
Build #5802
Jeep Wrangler Toad

Re: Muffler

Reply #9 –
Magnaflow is definitely quieter than the Aero 5050XL.  Still throaty, but we no longer cringed driving past the neighborhood softball field when a game was in progress. 
Learn every day, but especially from the experiences of others. It's cheaper!  - John C. Bogle

2000 U320 36' non-slide / WildEBeest Rescue
2003 U320

Re: Muffler

Reply #10 –
Quote from: MarkC –
Michelle, can you give an idea of the sound difference between the Aero and Magnaflow?  I am just getting ready to remove the giant muffler and go the resonator route and have been hesitant because I'm not sure which is the quietest, or maybe better said, least loudest.
Just a note. The magnaflow 5" actually necks down to 4" inside. I installed on mine and it is noticeable louder yet undetectable inside the coach. Will notice going through tunnels or next to walls with the windows open. For me it seems okay and the reduced heat mass definitely is noticeable after shut down. If needed I would replace with the same again. Hope that helps.
Ism exhaust resonator options

Re: Muffler

Reply #11 –
The PO had installed an arrow 50-50 on my coach when we got it. It is louder, but I cannot hear it sitting in the driver seat unless I'm next to a concrete wall or in a tunnel so it is tolerable. One thing for sure I won't be sneaking out of the campground unnoticed, but I try my best to be a good neighbor when I leave. I have no complaints with it. The bedroom does seem cooler when we get stopped.


Keith
The selected media item is not currently available.Keith & Jo
2003 U320T 4025 PBBS Designer series
Build 6203    Cummins 500hp
2000 U320 4010 WTFE / Build 5762 —Sold—
Motorcade #18070   
Pasadena, Texas
2015 Jeep Wrangler Sahara-Sunset Orange pearl coat
Don't argue with a fool, people watching might not be able to tell the difference.

Re: Muffler

Reply #12 –
The aero 50/50 is 5" all the way through.  Noticeable increase in low and mid rpm torque. M11 used to downshift a lot under load.  Changing the cooling fan controller to not have the fan run at full high speed all the time freed up up to 50+ hp then the less back pressure resonator added to the low power and changed the way the coach drove for the better.  Plus around 1+mpg. 
"Riding and rejoicing"
Bob
1997 U320 40' Mid entry, build 5132,  wtbi ce27, 4th owner
2007 Solara convertible
2 prodeco tech outlaw ss electric bikes

1095 watts solar
08 Ls 460 and a sc430
2000 Ford F-250 superduty 4x4

Re: Muffler

Reply #13 –
Quote from: Caflashbob –
The aero 50/50 is 5" all the way through.  Noticeable increase in low and mid rpm torque. M11 used to downshift a lot under load.  Changing the cooling fan controller to not have the fan run at full high speed all the time freed up up to 50+ hp then the less back pressure resonator added to the low power and changed the way the coach drove for the better.  Plus around 1+mpg.

What change did you make to the cooling fan controller?
Andy & Sue (and Sofie dog) + Lucy dog
2002 U320 4020
# 5959
TOAD 2014 CRV