Mufflers - Dodge Cummins Diesel Forum
89-93 Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect...NO ADVERTISING

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post #1 of 19 (permalink) Old 02-06-2020, 07:53 PM Thread Starter
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Mufflers

Do you guys run a muffler? Which one?

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post #2 of 19 (permalink) Old 02-06-2020, 08:12 PM
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Mine had a muffler delete when I got it, not a huge fan. I'll likely put a muffler on the truck eventually.

I've had great luck with flo-pro and mbrp on my other trucks.

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post #3 of 19 (permalink) Old 02-06-2020, 09:11 PM
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I had Magnaflow 30 inch on my 2004.5, it sounded good and wasn't too loud.

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post #4 of 19 (permalink) Old 02-06-2020, 09:19 PM
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I do, its compound turbos, hahahaha

My service truck is no muffler. It is loud
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post #5 of 19 (permalink) Old 02-07-2020, 12:12 AM
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Quote:
Originally Posted by Toolpro View Post
Do you guys run a muffler? Which one?
4” exhaust with straight pipe isn’t too bad but 3” is usually raspy and loud!!!! I run 4” diamond eye system with their muffler and it cuts the drone especially while towing.
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post #6 of 19 (permalink) Old 02-07-2020, 12:28 AM
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yes. Donaldson 4"

1992 w250, eaton fuller, club cab, mostly stock
1992 d350, srw, race truck
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post #7 of 19 (permalink) Old 02-07-2020, 12:30 AM
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4” exhaust with straight pipe isn’t too bad but 3” is usually raspy and loud!!!! I run 4” diamond eye system with their muffler and it cuts the drone especially while towing.
I forgot to mention that my service truck is 3 inch straight pipe it's annoying. I told for years with my extended cab as a 4 inch Diamond eye straight pipe and it was loud but bearable
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post #8 of 19 (permalink) Old 02-07-2020, 01:08 AM
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I will say, the 3" straight on my truck isn't a thing like the 4 or 5" straight pipes I've had in the past. It doesn't drone that badly which is half the reason I haven't changed it.

It's very directional if that makes any sense. When it bounced off a car or wall on the passenger side you can really hear how loud it is, but in the cab it's not bad at all

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post #9 of 19 (permalink) Old 02-07-2020, 01:56 AM
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My 93 XCLB is 3" straight pipe.. I don't find it bad at all..

'94 SC 4x4 Dually flatdeck, ~500hp, 67mm HE351VE, Maxed 215 pump with 5x16SAC's
'93 XCLB Auto 4x4, fuel pin, timing spacer, 3800 RPM GSK, Shift kit, 5x16 SAC's
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post #10 of 19 (permalink) Old 02-07-2020, 11:26 AM
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4" straight-pipe routed out over the axle is way quieter than out the side. Also quieter than 3" straight pipe dumped under the truck.

I built a fake muffler to keep the cops happy.

93 W250 Club 6BTA |5spd |60/80/3.54/Lockright |4" lift |315/75R16 |HX35 |5x.012s |BD pin & gov spring
90 D250 6BT |5spd |D60/3.54/Lockright
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post #11 of 19 (permalink) Old 02-07-2020, 03:00 PM
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4" straight-pipe routed out over the axle is way quieter than out the side. Also quieter than 3" straight pipe dumped under the truck.

I built a fake muffler to keep the cops happy.
I'm going to have to do that as well.

Also, stainless pipe transfers more sound than standard steel pipe

'94 SC 4x4 Dually flatdeck, ~500hp, 67mm HE351VE, Maxed 215 pump with 5x16SAC's
'93 XCLB Auto 4x4, fuel pin, timing spacer, 3800 RPM GSK, Shift kit, 5x16 SAC's
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post #12 of 19 (permalink) Old 02-07-2020, 05:40 PM
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You can get a ticket for straight pipe? Not where I live we don’t even have emissions tests here
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