675.cc • Triumph 675 Forum

Exhausts and Noise Levels

Discussion in 'Track Days' started by Gankmasterflex, Mar 4, 2013.

  1. Gankmasterflex

    Gankmasterflex

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    Ok Going to start a list with all of the exhausts I can think of to buy for the daytona and if somebody can put in the DB values of these if they know them that would be really cool then hopefully we can use it as a bit of a guide for forum members and we can add to it as and when people go to track days or have bikes tested for noise limits that way nobody will lose out on hard earned cash if they have booked a track day.

    If I have forgotten any please feel free to add as necessary but hopefully with this list we will be able to give everybody an idea of what they can expect from different exhausts and avoid lots more questions about it. Plus more importantly put fears to rest. However this isn't gospel and I have been informed that it depends on the noise tester but if we can get fairly accurate readings logged on here then at least people have a chance.

    Feel free to edit as necessary am hoping that we can come up with a definitive list and then leave it on here as a sticky if one of the mods would be so kind?

    Please note folks that if your bike isn't up to at least operating temperature before testing (hotter the better) then you can actually produce up to 2DB over the tabled levels below - Please note all levels were taken from bikes at operating temperature at the time of testing.

    1.) Standard OEM Can (With Cat) - 98DB (6.5k RPM)
    2.) Standard OEM Can (No Cat) -
    3.) TOR Can + Baffle ( With Cat) - 102DB (6.5K RPM This had wadding around the baffle)
    4.) TOR Can Baffle Less (With Cat) - 106DB (6.5k RPM)
    5.) TOR Can + Baffle (Without Cat) -
    6.) TOR Can Baffle Less (without Cat)
    7.) Arrow Slip on + Baffle (With Cat) - 98DB (Remember reading that from somewhere on here 6.5k RPM)
    8.) Arrow Slip on Baffle Less (with Cat) - 101 DB (Remember Reading that from somewhere on here 6.5k RPM)
    9.) Arrow Slip on + Baffle (Without Cat) - 102 DB (5.5k RPM)
    10.) Two Brothers M5 Slip on + Baffle (With Cat) - 98db (6.5k Rpm)
    11.) Two Brothers M5 Slip on Baffle Less (With Cat) - 102db (6.5K RPM)
    12.) Two Brothers M5 Slip on + Baffle (Without Cat) -
    13.) Two Brothers M5 Slip on Baffle Less ( Without Cat) -
    14.) Ixil Slip On + Baffle (with Cat) -
    15.) Ixil Slip on Baffle Less (With Cat) -
    16.) Ixil Slip On + Baffle (Without Cat) - 105DB (6.5k RPM
    17.) Ixil Slip on Baffle Less without Cat - 117DB (6.5K RPM)
    18.) Werkes Pipes + Baffle (With Cat) -
    19.) Werkes Pipes Baffle Less (With Cat) -
    20.) Werkes Pipes + Baffle (Without Cat) -
    21.) Werkes Pipes Baffle Less (Without Cat) -
    22.) Scorpion Slip on + Baffle ( With Cat) - 96DB (6.5K RPM)
    23.) Scorpion Slip on Baffle Less (With Cat) - 96DB (6.5K RPM)
    24.) Scorpion Slip on + Baffle (without cat) - 98DB (6.5k RPM)
    25.) Scorpion Slip on Baffle Less (without cat) - 105DB (6.5K RPM)
    26.) Akrapovic Slip on + Baffle (With Cat) -
    27.) Akrapovic Slip on Baffle Less (With Cat) -
    28.) Akrapovic Full Racing System + Baffle -
    29.) Akrapovic Full Racing System Baffle Less -
    29.) Arrow Stage3 Titanium Race System + Baffle - 104DB (Reliably informed :wink:)
    30.) Arrow Stage3 Titanium Race System Baffle Less - Rumoured to be around 117db :twisted:
    31.) GPR Full Race System -
    32.) Leo Vince Slip on + Baffle (with Cat) -
    33.) Leo Vince Slip on Baffle Less (with Cat) - 102db (6.5k RPM)
    34.) Leo Vince Slip on + Baffle (Without Cat) -
    35. Leo Vince Slip on Baffle Less (without Cat) - 103Db
    36.) Race Fit Slip on (Without Cat) + Baffle -
    37.) Race Fit Slip on (without Cat) Baffle Less -
    38.) Titanium Stage 2 header with no exup or cat. Mated to a stainless link pipe to a side exit titanium Scorpion Serket Taper (with baffle). - 106db at 10.25k rpm
    39.) Full Arrow Stage 2 System Baffle Less - 101db 6-6.5k rpm
     
  2. motorinmatt

    motorinmatt

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    My Leo Vince without baffle and de-cat pipe was 103 db, my mate bog stock with cat as standard is 98 :), these were last tested at Cadwell at whatever there standard rev range is, cant remember off the top of my head
     
  3. Gankmasterflex

    Gankmasterflex

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    Sound thank you dude that helps if I can get the list populated hopefully we can help everybody out before the summer track time sessions begin so that nobody has any wasted journeys...
     
  4. Wyrm

    Wyrm

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    Spot on when I had mine measured at Brands - though I was revving to 6,500 rpm.
     
  5. Gankmasterflex

    Gankmasterflex

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    Thought I might have the rev ranges wrong I'll edit to adjust thanks dude.
     
  6. Mine always registers 105. Consistent measurement, but it's always the same bloke at the same track so it could be wrong.
     
  7. Gankmasterflex

    Gankmasterflex

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    That can happen though dude it will vary from tester to tester but if we can get a rough guide together so that people can make an informed decision I just hope this will help others I would hate to get turned away from track.
     
  8. My ixil with no baffle and no decat was 117 at 6.5k
    With baffles and no decat was 105 at 5.5k
     
  9. @ Brands - Arrow slip on, no Baffle (with Cat) Lowest reading was 102.3db and that wasn't quite at 6,500 (more like 5,500 :roll: ) luckily the guy let it go
     
  10. Gankmasterflex

    Gankmasterflex

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    Thanks dude much obliged.
     
  11. fkkr1s

    fkkr1s Moderator Staff Member

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    Busy then mate lol
     
  12. Wyrm

    Wyrm

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    ...and that was at the same meeting as mine, so the same guy measuring it!
     
  13. Gankmasterflex

    Gankmasterflex

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    Always mate you know me :twisted: :lol:
     
  14. It shows the variation between bikes... maybe the R is quieter?? :lol:
     
  15. Wyrm

    Wyrm

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    N.B. If the tester moves the probe closer to your bike by 11cm it will register 1dB higher.
     
  16. My Scorpion slip on, on a 2007 bike is
    105 without baffle
    98 with
    and was the same before I had it de catted and exup removed.
     
  17. Gankmasterflex

    Gankmasterflex

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    Thanks guys I am populating the list slowly but surely hopefully have it finished before the spring!
     
  18. Christ, mine was 111db at 8.5KRPM last month at Castle combe!
     
  19. Haha nick I fucked up, I mean my ixil with no cat lol!! My bad hehe!!!
     
  20. Gankmasterflex

    Gankmasterflex

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    :lol: ah bugger ok dude I will re edit but thank you for letting me know.
     

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