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Donaldson high flow muffler

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by sshewins, Oct 16, 2020.

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  1. Oct 16, 2020 #1
    sshewins

    sshewins Road Train Member

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    He guys, got a question about Donaldson mufflers. Two weeks ago, I bought a Donaldson hi flo muffler (M100465) from a guy on Amazon for $105. Sweet, right? Not so fast. After I took it out of the box and examined it, there are zero baffles or any internal anything. Except for a small maybe 6 inch long stub on the outlet side, it's completely hollow. I'm thinking I just got took. I included a stock picture of an actual M100465 for reference. Anybody ever use something like this? I'm thinking about just returning it and spending the extra $$ on a genuine Donaldson. What say you? 20201010_133907.jpg 20201010_133857.jpg 10x51-Inch-Performance-Sport-Muffler_09-080220_l.jpg
     
    sshewins, Oct 16, 2020
    sshewins, Oct 16, 2020
    #1
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  3. Oct 16, 2020 #2
    DUNE-T

    DUNE-T Road Train Member

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    I can't remember how they looked like when I installed them on my two trucks few years ago, but I did not notice any performance difference vs stock ones
     
    DUNE-T, Oct 16, 2020
    DUNE-T, Oct 16, 2020
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  4. Oct 16, 2020 #3
    sshewins

    sshewins Road Train Member

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    I had one on my last KW. Gained about a half mile on my mileage.
     
    sshewins, Oct 16, 2020
    sshewins, Oct 16, 2020
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  5. Oct 16, 2020 #4
    singlescrewshaker

    singlescrewshaker Road Train Member

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    I thought the M100463 was the high flow model..?

    I'd run it..
     
    singlescrewshaker, Oct 16, 2020
    singlescrewshaker, Oct 16, 2020
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  7. Oct 16, 2020 #5
    jamespmack

    jamespmack Road Train Member

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    That flows well but more economy. The 100463 flows almost a 1000cfm more.
     
    jamespmack, Oct 16, 2020
    jamespmack, Oct 16, 2020
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    singlescrewshaker and Rideandrepair Thank this.
  8. Oct 16, 2020 #6
    sshewins

    sshewins Road Train Member

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    I want to keep from being obnoxiously loud and annoying.
     
    Last edited: Oct 16, 2020
    sshewins, Oct 16, 2020
    sshewins, Oct 16, 2020
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    Rideandrepair and jamespmack Thank this.
  9. Oct 16, 2020 #7
    jamespmack

    jamespmack Road Train Member

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    I'm running one on a Detroit, stack behind cab. Pretty tame from the drivers seat. The Jake belchs pretty good. I had one similar to the 100465. Seamed louder.
     
    Last edited: Oct 16, 2020
    Reason for edit: edit part number
    jamespmack, Oct 16, 2020
    jamespmack, Oct 16, 2020
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  10. Oct 16, 2020 #8
    Rideandrepair

    Rideandrepair Road Train Member

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    As I recall the 463, I got from Ryder looked about the same, you could see straight through. They’re only slightly louder than stock mufflers
     
    Rideandrepair, Oct 16, 2020
    Rideandrepair, Oct 16, 2020
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    User666, singlescrewshaker, jamespmack and 1 other person Thank this.
  11. Oct 16, 2020 #9
    jamespmack

    jamespmack Road Train Member

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    A 463 has more of a ventura cone shape.
     
    jamespmack, Oct 16, 2020
    jamespmack, Oct 16, 2020
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  12. Oct 16, 2020 #10
    Rideandrepair

    Rideandrepair Road Train Member

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    For the price, and since you already have them, I keep them. Who knows, you might get a bump in mpg’s to boot.
     
    Rideandrepair, Oct 16, 2020
    Rideandrepair, Oct 16, 2020
    #10
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