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TRD catback drone?

Discussion in '2nd Gen. Tacomas (2005-2015)' started by TacoTuesday1, May 3, 2020.

  1. May 3, 2020 at 3:40 PM
    #1
    TacoTuesday1

    TacoTuesday1 [OP] Well-Known Member

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    Anyone know how to get rid of the highway speed drone that's deafening on long road trips? (oem TRD catback)

    [​IMG]

    I heard the trick is to buy a Vibrant 1141 resonator and then take it to an exhaust shop to weld it in
    Though I'm not 100% sure if the resonator is meant to address rasp, or drone
    [​IMG]
     
  2. May 3, 2020 at 4:53 PM
    #2
    ARB1977

    ARB1977 It’s a beaut Clark

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    Mine doesn’t drone. Check your donut gasket and make sure it’s not leaking. If all is good you could add a resonator. Unless you have an aftermarket y pipe.
     
    Biscuits likes this.
  3. May 3, 2020 at 4:54 PM
    #3
    19TRDTac0

    19TRDTac0 Active Member

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    I have one on mine, and it does not drone. I could just be used to it as I have had tuner cars for the last few vehicles I have owned...
     
  4. May 3, 2020 at 5:04 PM
    #4
    08TacoTrD

    08TacoTrD Well-Known Member

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    This. Take a look at the donut. Mine doesn't drone either.
     
  5. May 3, 2020 at 5:07 PM
    #5
    TacoTuesday1

    TacoTuesday1 [OP] Well-Known Member

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    Shouldn't be leaking, have checked before and installed a new one with the exhaust
    but will get under to take a look to be sure
    maybe will look for signs of leaking (black residue) or spray with soapy water after turning the engine on to check for bubbles
    I heard it helps to plug the tailpipe a bit with a rag temporarily while doing that, to create pressure that pushes the bubbles to air up/be visible

    though I did not replace any exhaust hardware besides the donut
    for example Toyota says to measure/check the bolts and spring washers that hold it together, claiming they can wear out and need replacement to apply proper tension to squeeze the donut gasket tight

    Maybe I'm not sure if it's just perception
    Never had a tuner car before and this is my first catback
    Not as loud as friends' tuner cars but those were much closer (if not actually) straight-piped

    No Y-pipe, just went with a used catback since it was cheap
    I heard the more parts you upgrade, the louder it gets
    (catback, y-pipe, supercharger whine, etc.)
    Unless a y-pipe is worth it for some more power

    just was not sure if a resonator is the right part to improve drone
     
  6. May 3, 2020 at 6:22 PM
    #6
    Kolter45

    Kolter45 Well-Known Member

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    Same mines been great no drone - factory hardware but new gasket

     
  7. May 4, 2020 at 9:02 AM
    #7
    DelinquentTaco

    DelinquentTaco Active Member

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    I've got a drone at like 70ish mph (2000-2500 rpm) but I've just gotten used to it. It may help to just change your speed by a couple mph and keep the engine out of the rpm range that the exhaust resonates the most. Wind noise, tire noise, and exhaust drone have all become a regular part of driving for me.
     
  8. May 4, 2020 at 9:54 AM
    #8
    Steve-O

    Steve-O Well-Known Member

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    I'm guessing this is happening over a narrow RPM range. Some people may never experience it because they don't normally operate their truck in a range that produces it, but you clearly do.

    You have two options:

    1. Modify your truck or your driving habits to stay out of that RPM range. Modifying your driving habits may not be safe, and modifying your truck would involve changing your final drive ratio (through some combination of different tire sizes and gearing) enough to keep you out of that range. Not cheap.
    2. Muffle the sound more

    I think you are on the right track; adding or replacing the muffler with something that will quiet things down more should help. Unfortunately, it is hard to tell how much will be enough, so you'll have to experiment unless someone has had the exact same problem, and was able to solve it with a specific part.
     
    Kolter45 likes this.

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