Foretravel Owners' Forum For owners and Fans of Foretravel Motorcoaches September 10, 2025 ...

Been thinking about this for a while after afew good times of chiming my bell on that massive drum of a muffler.

Where are folks getting the fab up pipes, etc? resonators see em everywhere, with amazon being a common link. Dont really want to rip the old out then spend weeks trying to get all the parts.

  Would it be the same as the 8.3?

Maybe the same as yours. read the parts list

Been thinking about this for a while after afew good times of chiming my bell on that massive drum of a muffler.

Where are folks getting the fab up pipes, etc? resonators see em everywhere, with amazon being a common link. Dont really want to rip the old out then spend weeks trying to get all the parts.

Donaldson makes all of that stuff and even warns you to check which goes in and which goes over.

https://www.donaldson.com/content/dam/donaldson/engine-hydraulics-bulk/catalogs/Exhaust/North-America/F110028-ENG/Exhaust-Product-Guide.pdf

John, I assume you did this?  Did you have to relocate existing air cleaner to eng. compartment?  Mine is mounted befind rear wheels.

Is the Donaldson or MagnaFlow quieter?  I want quiet which is why I own a diesel pusher in the first place.  The DW and I have more quiet talks on our trips than we do all year at home.  I'd hate to start a shouting match on vacation! 

I am unable to hear the MagnaFlow at hi way speeds. It is certainly louder than the stock muffler with the windows open and against a wall or in a tunnel, but with window closed it doesn't exist. Non issue in my opinion.

I'm considering this modification. Those that have done it yourself did the exhaust muffler and pipes come apart or have to be cut out?

If a previous owner hasn't "been in there" the joints should be made with flat clamps.  Even so you'll need and air impact hammer with the hammer tool to drive the sections apart.  Just move the clamp onto the part you want to remove and hammer away.  I tried to do it with hammer and punch, then I made a trip to Harbor Freight for the above mentioned tools.  I already had two Porter Cable pancake compressors for spraying gel coat.  Once all was set up and ready to go, and I'd developed control over the impact gun, I leaned into the job planning to run until both compressors were huffing away and pressure began to drop off.  Then I noticed that the tail pipe had turned 90 degrees under its own weight, looking a little further the tail pipe had bumped up against something solid.  Moral of the story is the pipes come out pretty easy with the right tools.

Mine came apart without any cutting. And installation without any welding.