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M380 (Unique Issues) If you have a unique issue with your M380 model coach and it can't be answered in one of the other forums here, then this is where you can list it.....list your M380 Parts here too.

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  #71  
Old 01-19-2019
Jim Brookshire Jim Brookshire is offline
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Location: Saluda, NC
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Default

see attached pictures. This arrangement allows any water that enters the exhaust bend to exit the exhaust system before it enters the muffler. By the time any moisture goes around the 90 degree bend, it is attached to the walls of the exhaust tubing, it will run down the outside of the pipe and muffler. This arrangement will also act to pull additional air up the exhaust compartment.
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2001 LXI
Saluda, NC
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  #72  
Old 07-30-2020
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Thumbqdm Thumbqdm is offline
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Location: Harbor Beach
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Default M380 Exhaust Peace of Mind

I picked up the coach from J. W. Hunt in Bad Axe today. They removed the stock muffler and installed a "muffler delete" system. They also fabricated a rain trap similar to the one shown in a previous post on this thread. The photos are as follows:
1. View from below, showing the rain drain slots. Essentially the lower part of the vertical pipe is double wall. 4" for 2', surrounded by 5" all the way to the chrome tip. The rain slots are around the 4" - 5" adapter. Note the heavy fire-wrap.
2. View from top. Note fire-wrap and tons of air circulating clearance.
3. Chrome tip with bird screen still off. Time to get out the chrome polish!
4. View looking down inside the chrome turn-out. Good thing I didn't drop the I-Phone. Note the 4" liner a few feet down.

Total cost was $620. While I probably could have done the job myself, $320 was parts, $300 labor. No argument from me on this one. No skinned knuckles and no dented body panels. And now I have peace-of-mind on the upcoming trips this summer.

And yes, it is louder. Will I get used to it and not mind? Time will tell. I know I'll need to be a little more thoughtful when applying the exhaust brake in neighborhoods.
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Paul Plantinga
Harbor Beach, Michigan
2004 M380
2006 Jeep Wrangler
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  #73  
Old 09-10-2020
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Default M380 Straight Pipe

Update on my M380 straight pipe conversion. We just completed an 800-mile round-trip thru Michigan's Upper Peninsula and I not only don't mind the increased sound of the straight pipe, I actually really like the throaty sound. I'm a gear-head / car-guy so I guess I just may prefer a bit of am exhaust note. My wife has very sensitive hearing and she-too said she thinks the sound is "cool". Yes the engine brake is louder also and I am more sensitive to decelerating into small towns than I used to be, but all-in-all the peace-of-mind to not have to worry about a rear closet fire has been well worth it.

Next project is to replace my halogen high and low beams with the newest H1 Hikari bulbs ordered this morning, just in time for our Pine Mountain journey.

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
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2004 M380
2006 Jeep Wrangler
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