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360 Quieting a Tubi

Discussion in '360/430' started by netsec, Dec 24, 2023.

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  1. netsec

    netsec Karting

    May 5, 2022
    101
    Henderson, NV
    #1 netsec, Dec 24, 2023
    As much as I hate to admit it, I became “it’s too loud” years old. Fabspeed headers and cats w/a Tubi “louder” muffler. Short of swapping it, is there anything to quiet it down a notch or three? Potentially welding in valves (assuming muffler would support it)?
     
    cavlino likes this.
  2. BrettC

    BrettC Formula 3

    Aug 13, 2012
    2,115
    Calif
    Full Name:
    Brett
    #2 BrettC, Dec 24, 2023
    Stuff the pipes with steel wool? LOL, turn your hearing aids down....It'll be fine!
     
    bryanchin and cavlino like this.
  3. netsec

    netsec Karting

    May 5, 2022
    101
    Henderson, NV
    #3 netsec, Dec 24, 2023
    LOL
     
  4. efg2014

    efg2014 Formula Junior

    Sep 14, 2014
    657
    Northern California
    #4 efg2014, Dec 24, 2023
    Send an email to Tubi and ask.
     
    netsec likes this.
  5. RedTaxi

    RedTaxi F1 Rookie
    Silver Subscribed

    Mar 1, 2012
    3,338
    New Zealand
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    Glen
    #5 RedTaxi, Dec 24, 2023
    With a basic Tubi all the gasses go through the muffler so valves are not applicable. I would go back to stock cats to tone it down a notch or two.
     
    cavlino likes this.
  6. Steve Heck

    Steve Heck Formula Junior

    Nov 1, 2021
    262
    TO Canada
    Full Name:
    Steve Heck
    #6 Steve Heck, Dec 25, 2023
    I was going to suggest the same, even look at a set of 300 CEL GESI cats ... thats the direction I'm going
    Cheers
    Steve
     
    cavlino and one4torque like this.
  7. priericky128

    priericky128 Formula Junior
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    Feb 11, 2021
    676
    St. Louis MO
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    Rick
    #7 priericky128, Dec 25, 2023
    I have the same concern. I have not done anything about it yet but I think the oem valves tips will fit on the tubi muffler which would be an easy swap. I am mainly concerned on drone at low rpm tho


    Sent from my iPhone using FerrariChat
     
  8. SCKOMS

    SCKOMS F1 Rookie
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    Oct 21, 2011
    3,900
    Lake County, IL
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    Spiro
    #8 SCKOMS, Dec 25, 2023
    I'm running g AP headers with a Tubi muffler. It was too loud, all the time.
    I bought a used 430 exhaust and swapped out the pipes so the exhaust has valves now. Works great.

    The only downside is that my shiny Tubi muffler which never had hot exhaust gases going through it has now become discolored from the heat.


    Sent from my iPhone using FerrariChat
     
  9. clean512

    clean512 Formula 3

    Feb 4, 2010
    2,110
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    Josh @jtcarprojects
    #9 clean512, Dec 26, 2023
    Crazy I'm trying to make my cs exhaust louder
     
  10. priericky128

    priericky128 Formula Junior
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    Feb 11, 2021
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    #10 priericky128, Dec 27, 2023
    I’ll trade you my tubi for your cs exhaust [emoji6]


    Sent from my iPhone using FerrariChat
     
    clean512 likes this.
  11. netsec

    netsec Karting

    May 5, 2022
    101
    Henderson, NV
    #11 netsec, Dec 27, 2023
    I was thinking about putting the original valved pipes on to see if that would work. Not sure how the Tubi muffler is “plumbed” internally, sent them an email for guidance/advice. In the interim, going to compare volume between inside and outside pipes before tearing into things.
     
    Countrygent likes this.
  12. Steve Heck

    Steve Heck Formula Junior

    Nov 1, 2021
    262
    TO Canada
    Full Name:
    Steve Heck
    #12 Steve Heck, Dec 28, 2023
    Netsec, your issue is the headers, anything else you try to do will make very little difference in my opinion.
    Suggestion, sell the Fabspeed headers for good $$ (lots of guys looking for these) and source out a quality set of originals and keep the Tubi.

    Just my 2 cents$

    Cheers
    Steve
     
    netsec likes this.
  13. netsec

    netsec Karting

    May 5, 2022
    101
    Henderson, NV
    #13 netsec, Jan 8, 2024
    As a follow up…
    Tubi got with me. I can add valves to the exhaust, their part number is 01239911020V.

    Blocking the outer pipes made it quieter, but kinda weird at the same time. Going to live with it for now, might even be getting used to it haha.
     

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