Popping And Banging Exhaust

Discussion in 'Bonneville' started by Reg Thomas, Jul 10, 2023.

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  1. Reg Thomas

    Reg Thomas New Member

    Feb 26, 2023
    5
    3
    Oxfordshire
    Hi all just bought a 2011 Triumph Bonneville SE. When out riding and decelerating the exhaust pops and bangs is this normal, its all stock as far as i can see Cheers all.
     
  2. Traveler

    Traveler Well-Known Member

    Jun 21, 2023
    135
    93
    Helena, Sweet Home Alabama
    If the pipes are stock then I'd guess the carbs need to be re-jetted. The condition you describe makes me think the engine is running lean.
     
  3. Reg Thomas

    Reg Thomas New Member

    Feb 26, 2023
    5
    3
    Oxfordshire
    Its Efi :)
     
  4. bruno_c

    bruno_c New Member

    Oct 19, 2018
    16
    3
    France
    I suggest to block the air injection system (AIS) if there is still one on your bike.
     
  5. Traveler

    Traveler Well-Known Member

    Jun 21, 2023
    135
    93
    Helena, Sweet Home Alabama
    Thought it was a carb unit. Sorry
     
  6. Pegscraper

    Pegscraper Elite Member

    Jun 12, 2020
    3,013
    800
    Yorkshire
    A leak on the exhaust system before the silencer(s) can also cause this. Check for loose exhaust fittings/clamps etc.
     
    • Agree Agree x 1
  7. MightyBoosh

    MightyBoosh Member

    Mar 29, 2023
    47
    18
    Uk
    #7 MightyBoosh, Jul 11, 2023
    Last edited: Jul 11, 2023
    It's normal. As has been said, SAI removal will pretty much stop it.

     
  8. steve lovatt

    steve lovatt Something else

    May 12, 2014
    9,212
    1,000
    North Yorkshire
    Had a 2012 SE, which was stock when bought but it never popped and banged with standard exhaust.
     
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