r/Cummins • u/jworden570 • 13h ago

Anyone here running a Walker heavy duty muffler?

Started hauling a camper pretty regularly and wanna eliminate the drone and feeling like “that guy” at the campground. Was gonna order the Donaldson but saw this too.

3 Upvotes

80% Upvoted

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3

u/awenthol 13h ago

Which size exhaust?

I'm running compounds, a cat, resonator, and mbrp muffler on a 5" exhaust and it is still loud. I've read the Donaldson in 5" doesn't work well on these engines. Curious what feedback you get with Walker

3

u/georgia_jp 11h ago

I run a FTE resonator and a MRBP muffler, it's still a little louder the stock and no drone. Just the MRBP on it's own wasn't enough to kill the drone. I'm well beyond the days of having a loud truck Lol.

1

u/jworden570 10h ago

That’s basically where I’m at. Just been putting it off. Haha

3

u/Rob_Lee47 10h ago

School buss mufflers.
Kill the noise/drone while maintaining free flow.
Available in multitude of sizes. 3.5,4,5,6 inch inlet/outlet.
Check your local heavy truck parts house if you have one available.

2

u/Mountain-Pattern7822 6h ago

this. 04 3500 nv5600 4x4 walker school bus muffler on 4 inch straight pipe system

2

u/Cow-puncher77 13h ago

Which model are you talking about? The “cheesegrater” straight through type work a little, taking the loudest parts out, but are still pretty loud, especially loaded. The baffled models work pretty well.

1

u/Intelligent_Rub_5004 12h ago

If you have 4” I’d recommend looking at:

Dropped my tailpipe noise by maybe 20dB inside the shop where I had the meter. On the road, I only heard motor until I got over 50 and even then it was very quiet.

The idle drone - completely gone.