Exhaust Drone!!

Mopar Exhaust Systems

  1. dodge413

    dodge413 Active Member

    Messages:
    35
    Likes Received:
    15
    Joined:
    Mar 9, 2012
    Location:
    Massachusetts
    Local Time:
    1:18 AM
    I Just Put On A 2 1/4 Dual Exhaust With2 Chamber Flowmaster Mufflers On My 64 Polara 318. It Sounds Terrific Outside The Car, But The Low RPM Drone Inside The Car While driving Is Deafening. I'm Going To Put In Some Sound Deadener Mat, But That Will Only Help A Little I'm Affraid.

    If I Add An H Pipe Or Balance Pipe In The Exhaust, Will It Cut This Drone Down? Thanks Guys!!!!
     
  2. krowbar

    krowbar Well-Known Member

    Messages:
    903
    Likes Received:
    220
    Joined:
    Mar 27, 2013
    Location:
    979 Texas
    Local Time:
    12:18 AM
    Doubtful.
     
  3. OKDart

    OKDart Well-Known Member

    Messages:
    143
    Likes Received:
    132
    Joined:
    Nov 9, 2012
    Location:
    Oklahoma
    Local Time:
    12:18 AM
    Best thing to minimize drone is a resonator. H or X doesn't help that much IMO.
     
  4. 5.7 hemi

    5.7 hemi FBBO Gold Member FBBO Gold Member

    Messages:
    12,569
    Likes Received:
    9464
    Joined:
    Dec 21, 2008
    Location:
    ca
    Local Time:
    12:18 AM
    The flow masters are known for the drone....I'm a poet, lol! Anyway, the 50 series mufflers are said not to have a drone, but I can't say for sure as I have the 40 series and yeah, they drone at lower rpm's.
     
  5. razreddobie

    razreddobie Well-Known Member

    Messages:
    322
    Likes Received:
    46
    Joined:
    Mar 31, 2013
    Location:
    Jeannette, Pennsylvania
    Local Time:
    1:18 AM
    Yeah you're not gonna get rid on the drone without changin mufflers. I did 3 hours up I70 at 3 grand on my way to the Nats. Thought my ears were gonna bleed.lol
     
  6. 99ss

    99ss Well-Known Member

    Messages:
    2,214
    Likes Received:
    466
    Joined:
    Jul 15, 2010
    Location:
    Oregon
    Local Time:
    10:18 PM
    Is it dumped or run out the back?

    Some times a good tip will take some of it away... my tone changed drastically from pipe end to really nice tips
     
  7. snakeyes

    snakeyes FBBO Gold Member FBBO Gold Member

    Messages:
    27,212
    Likes Received:
    27622
    Joined:
    May 5, 2011
    Location:
    ohio
    Local Time:
    1:18 AM
    never had that problem ,had open headers since new and no radio :headbang:
     
    • Like Like x 4
    • dodge413

      dodge413 Active Member

      Messages:
      35
      Likes Received:
      15
      Joined:
      Mar 9, 2012
      Location:
      Massachusetts
      Local Time:
      1:18 AM
      I Am Running 2 1/4 Tailpipes, No Dumps.
       
    • Budnicks

      Budnicks Super Poster, You Can Just Thank Me Later FBBO Gold Member

      Messages:
      48,399
      Likes Received:
      48628
      Joined:
      Jan 16, 2011
      Location:
      East of Sonora Calif., We love the 2nd Amendment
      Local Time:
      10:18 PM
      I have the American Thunder Flowmaster tubing with a H-Pipe, header back 3" mandrel bent system, purchased from Summit racing 2007 or so, but with older 50 series/Delta flow race mufflers {I purchase a few sets years ago} on my 68 RR 479ci-6bbl with tail-pipes out the rear {I also have one, a 3" cat-back on my 99 Dakota 4x4 5.2ltr. too}, it's kind of loud on the RR {not so much on the Dakota} but the RR has 600+hp the Dakota has 300hp & is allot higher off the ground, but no real bad drone, in either vehicle, like others seem to experience & it kind of gets quitter as you accelerate, to a point.... Music to my ears.... Isn't a 60's "muscle car" supposed to be a "little obnoxious anyway", isn't that the whole point of owning these "old Muscle cars"... IMHFO it's the whole combo not just the mufflers or just the tubing, headers, camshaft, valve train, convert stall, if it's rubber mounted or not, maybe even where it's mounted to the car or how low the cars is to the ground, etc. etc. etc. all these type things, will also effect the sound coming from your perceived cars mufflers &/or exhaust inside the car... But some good quality sound deadening does/will help too & especially between the trunk under & behind the back seat &/or package tray &/or under the carpeting... Many people that had drone issues also had header noise, from 18-20ga. thin wall tubing, even rubbing or exhaust tubing rubbing or solid mounted, somewhere adding to the drone noise... Hell my electric fuel pump is far more obnoxious than my exhaust ever is/was...

      If I want "quite" I will drive something else, neither are anywhere nears as obnoxious as the 7.3ltr. Powerstroke diesel drone going down the HWY or idling...

      Another big part of the problem is the big ass trunk on these B-Bodies is like a big base drum/megaphone for noise too... a matt in the trunk will probably help also, or add some insulation too, maybe... If you like the exhaust tone anyway...
       
    • coloradodave

      coloradodave FBBO Gold Member FBBO Gold Member

      Messages:
      3,513
      Likes Received:
      2856
      Joined:
      Jun 1, 2011
      Location:
      Lincoln, CA
      Local Time:
      10:18 PM
      I, too, got tired of the drone of my Flowmasters going down the highway. When my wife wouldn't ride with me any distance, I started looking for alternatives. I installed Walker Quiet Flow mufflers and am very happy with the exhaust sound and the absence of the droning. I have 2 1/2" exhaust with an X pipe to the rear bumper and LOTS of sound deadening mat, so the answer is different mufflers. Good luck...
       
    • themechanic

      themechanic Oklahoma is OK FBBO Gold Member

      Messages:
      9,168
      Likes Received:
      9913
      Joined:
      Nov 11, 2012
      Location:
      Moore, Oklahoma
      Local Time:
      12:18 AM
      You should listen to the Dynomax Super Turbos on YouTube. They don't drone and sound pretty good.
       
      Last edited: Aug 26, 2013
      • Like Like x 1
      • copper67440

        copper67440 Well-Known Member

        Messages:
        505
        Likes Received:
        97
        Joined:
        Jul 28, 2008
        Location:
        Dexter Michigan
        Local Time:
        12:18 AM
        X2 Dynomax Super Turbos FTW
         
      • dodge413

        dodge413 Active Member

        Messages:
        35
        Likes Received:
        15
        Joined:
        Mar 9, 2012
        Location:
        Massachusetts
        Local Time:
        1:18 AM
         
        • Like Like x 1
        • purplecharger

          purplecharger Member

          Messages:
          9
          Likes Received:
          0
          Joined:
          Jul 7, 2013
          Location:
          MN
          Local Time:
          12:18 AM
          FlowMaster 50's have a very bad drone too
           
        • snakeyes

          snakeyes FBBO Gold Member FBBO Gold Member

          Messages:
          27,212
          Likes Received:
          27622
          Joined:
          May 5, 2011
          Location:
          ohio
          Local Time:
          1:18 AM
          you could always do what most of the young kids do today crank the volume up to you can hear the sheet metal rattle ........:rolling:
           
        • 4eyedblonde

          4eyedblonde Well-Known Member

          Messages:
          96
          Likes Received:
          17
          Joined:
          Jan 31, 2013
          Location:
          Oakville Ontario
          Local Time:
          12:18 AM
          I have full 3" right out the back (440). I kinda love that symphony of destruction to the point I pulled my stereo out ;)
           
          • Like Like x 1
          • krowbar

            krowbar Well-Known Member

            Messages:
            903
            Likes Received:
            220
            Joined:
            Mar 27, 2013
            Location:
            979 Texas
            Local Time:
            12:18 AM
            Same here,but mine exit out the sides in front of the rear tires.
             
          • Budnicks

            Budnicks Super Poster, You Can Just Thank Me Later FBBO Gold Member

            Messages:
            48,399
            Likes Received:
            48628
            Joined:
            Jan 16, 2011
            Location:
            East of Sonora Calif., We love the 2nd Amendment
            Local Time:
            10:18 PM
            I guess I'm just different maybe... I don't let other peoples opinions or the wife dictate what my car sounds like or them effect my enjoyment of driving it....
             
            • Like Like x 3
            • Cranky

              Cranky Banned Staff Member FBBO Gold Member

              Messages:
              20,759
              Likes Received:
              17212
              Joined:
              Dec 4, 2009
              Location:
              Pasa-getdown-dena Texas
              Local Time:
              12:18 AM
              Where are the mufflers placed under the car? Location can make a difference too. Closer to the engine, the louder the mufflers will be and closer to the tail, they become more quiet but hell, I've had better results running straight pipes! Never had a drone problem with straights and yes, they are run all the way to the tail. I've been doing straights since the 70's........so far no tickets and at times, they were not any louder than having Flowbastards and sounded just as good if not better.
               
            • Dennis H

              Dennis H FBBO Gold Member FBBO Gold Member

              Messages:
              14,194
              Likes Received:
              17166
              Joined:
              Jul 11, 2010
              Location:
              San Jose
              Local Time:
              12:18 AM
              x3
               
            1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
              By continuing to use this site, you are consenting to our use of cookies.