Wanted a straight through muffler about as quiet as stock, and in reading posts and searching, the Donaldson 51" M090535 seemed to fit the bill. I retained the stock 4" pipes but used some reducers to go up to 5"(as this muffler has 5" ID pipes), and then back down right after the muffler. I also made the exhaust straight through by removing any other restrictions that were in the way and could be clogged..

So, fired it up and YEAH, not as quiet as stock. I do think I like it though as there is no drone, but below 1800rpm there is a V E R Y deep rumble. Very smooth though just VERY deep..

Above 1800rpm at highway speeds you can tell you have non stock exhaust, but it's quiet enough to not drive you crazy, and I am a freak about this after going through about 15 trucks and hotrods... Hate the droooone...


Anyone wants pictures or sound/video let me know...



Don

 

Yes... Sound. And please no back ground "heavy metal" music. Just the sound of the truck.

 

yes I would LOVE a sound clip...I just made a thread about 5" mufflers cause my 5" turbo back to 7" stack is to loud while on the freeway...
I thought the 51" Donaldson would be too quiet but the way you describe it makes me think it is exactly what I want?!?!?!? now I dont know what I want

if you make a sound clip put the cam on the dash and take it for a burn...that's where I put mine for my sound clip so it would be good to do the same for comparisons....thanks for posting this


Mark

 

I'll crank up some cannibal corpse just for you haha!!

Linik removed by admin

It's on youtube so I can't imagine there is any problem posting that.. ^

 

I'll do cam on the dash, and a "get on it" down the street... Tomorrow I hope..

 

Thank you sir

 

Got some vid for you all..

I would say that the video is pretty realistic, but the muffler maybe sounds a bit more loud in real life.

At idle, there is a slight "flutter like" wind noise you can hear(which I don't like), but I'm being REAL picky. Is kinda like the noise you hear with a pinched tailpipe... In the last part of the vid the idle sounds REAL clean and hollow, but that small flutter sound is there in real life. It does sound good though don't get me wrong..

~~~~~~~~~ Donaldson M090535 video ~~~~~~~





.

 

That's got a nice tone to it! I thought mine was deep, but you've got me beat. Maybe when I step up to 5" I'll think about a Donaldson now.

 

Trevor your truck sounds good!!! Don that sounds really good... I think I've heard that!!!

P.S. got my box of goodies today!!! Thanks Don!!!

 

Thanks. Box of goodies? What'd you buy this time?

 

Don's steering stabilizer!!

 

Hope it helps your DW. Yours was bad!

 

Sounds good.

Are there any other mufflers that give the big rig sound though, with no droning ?

 

It does have a throaty,very deep resonance to it. Really nice touch with the "curb cam". It's still too loud for my "rock concert and seven years with the '99 impaired ears" I'll leave mine stock. Thanks,Don.

 

It sure is more noise than I wanted(not LOUD), but I'm starting to like it. It has no drone AT ALL, so it's nice to hear it, but not have it resonate..