Opinions on Donaldson muffler....

[steved]

Well, I slipped... decided that I really wanted to stay with some sort of stainless steel, so I bought a 30" MagnaFlow. It wasn't but $6 more (shipped) to my door than the Donaldson was locally. And everything I read indicated the Magnaflow was almost quiet and still straight-through, so I'll take the chance.



Someone bought my muffler off my setup (good) which is polished 304 stainless... and believe it or not, that little thing actually did quite a bit (probably a combination of it and the full tailpipe). Since I sold the muff, I took off everything from just rear of the cab back (extension pipe, muff, and tail pipe) so that I could be ready to ship when I got the payment... my neighbors probably hate me :-laf



Needless to say, while its cool to hear the turbo wind up and it chirp at each shift, I need earplugs to drive it in traffic...



steved

 

[steved]

Even though I’m going with a MagnaFlow, here are some of the “other” options that I looked at:



86561M = 28 inch

86127M = 34 inch

86131M = 44. 5 inch

86144M = 11. 5 inch

86189M = 28 inch

86408M = 44. 5 inch

86560M = 20 inch

201570N = 24 inch

20874A = 34. 4 inch

25833N = 28 inch (4”ID/4”OD)

M090544

M085171 = 41 inch (1800 CFM, 19#s, 8-12dB reduction…this one looked good)

M4490 = 44. 5 inch (I think??)

86131M = 44. 5 inch (this is the “open” 51 inch Donaldson…2000CFM)

86108M = 44. 5 inch (this is the “closed” or baffled 51 inch Donaldson…1600CFM)

MO101167 = 24 inch (1120CFM, 19#s, 12-18dB reduction)

MO85421 = 40 inch (1212CFM, 21#s, N/A dB)



Some of these are Nelson, some are Donaldson, some are Fleetguard numbers…all are center in/out on a round 7 to 10 inch body. I placed flow ratings where I found them…a quick call to your local supplier can get you the flow ratings of the others…



steved

 

[daytripper63]

Well, I slipped... decided that I really wanted to stay with some sort of stainless steel, so I bought a 30" MagnaFlow. It wasn't but $6 more (shipped) to my door than the Donaldson was locally. And everything I read indicated the Magnaflow was almost quiet and still straight-through, so I'll take the chance.



Someone bought my muffler off my setup (good) which is polished 304 stainless... and believe it or not, that little thing actually did quite a bit (probably a combination of it and the full tailpipe). Since I sold the muff, I took off everything from just rear of the cab back (extension pipe, muff, and tail pipe) so that I could be ready to ship when I got the payment... my neighbors probably hate me :-laf



Needless to say, while its cool to hear the turbo wind up and it chirp at each shift, I need earplugs to drive it in traffic...



steved

I have the 30" magna flow and just added another 20" magna flow ahead of it trying to quiet it down

 

[steved]

I have the 30" magna flow and just added another 20" magna flow ahead of it trying to quiet it down

But I'm almost stock, so it should do fine... anything will be better than the 16" that was on there...



steved

 

[steved]

Also, you can get an idea of what is available at Donaldson by looking at:



https://dynamic.donaldson.com/webc/WebStore/hierarchy/hierarchy.html?section=10194



And what Nelson has to offer:



http://www.fleetguard.com/fleet/en/catalog/muffler_index.jsp





steved

 

[daytripper63]

But I'm almost stock, so it should do fine... anything will be better than the 16" that was on there...



steved

Stock your probably ok. I ran around with the 30" magnaflow for a couple years but when I added a bigger turbo the exhaust got louder and then I added the second muffler

 

[steved]

Stock your probably ok. I ran around with the 30" magnaflow for a couple years but when I added a bigger turbo the exhaust got louder and then I added the second muffler

You guys with your big trucks scare me... :-laf



I hope it sounds good... I'm gaining almost a full inch (the whole way around ) of insulation and almost double in length...



steved

 

[daytripper63]

You guys with your big trucks scare me... :-laf



steved

I as did many others ventured down that slippery road and ahhhh welllll SLIPPED

But love the power

 

[2 Ram Fam]

Any one know how the Donaldson (Mo90544) sounds without the cat? Just order it, $75. 09, to replace the Banks Monster.

 

[sfr1047]

2 Ram Fam



I tried the 90544 on my 04. It was nice and quiet and no drone.

I switched to a 90535. ( 5" in and out X 51" ) It is a little bit louder but no drone

and has a better flow rate.

 

[2 Ram Fam]

Thanks for info sfr1047. I'm assuming you lost your cat. Banks dose have drone on the long the long box QC.

 

[sfr1047]

2 Ram Fam



Early 04`s did not have cats.

 

[steved]

Banks dose have drone on the long the long box QC.

That might be a result of the QC, and not the muffler/exhaust...



I notice I don't have as much resonation in the cab as other trucks that are QC...



steved

 

[BElliott]

Hello,

I have an 06 megacab and have a couple of question in relation to the Donaldson, I am considering purchasing this muffler.

1. my stock muffler is not a straight in and out, it is offset, the outlet is probably 4 inches higher than the inlet. How have you delt with this? The
Donaldson is a straight thru design.

2. there is another object after the muffler, a resonator or something, does anyone know what that is.

Thanks in advance for any help.

 

[mr.wilson]

Mine rocks, easy to install sounds great, no drone. What else needs to be said?

 

[2 Ram Fam]

Steved ,I believe your correct. The bigger the cab the more drone possible. Mega-cabs have factory resonators I believe.