Exhaust noise levels???

Discussion in 'Engine, Fuel and Exhaust' started by cdn-bigfoot, Jun 19, 2010.

  1. cdn-bigfoot

    cdn-bigfoot Junior Member

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    I got my exhaust noise level metered by the local police today under an amnesty program as a new bylaw comes into affect.
    Bylaw states V-twins are not to exceed 92db at idle and 96db at 2000 rpm.

    I hit 92.5db at idle and over 100db at 2000 rpm. Making my 2006 Street Bob ripe picking for a $250 fine.:newsmile077:
    I have Cobra Speedster Shorts pipes with the quiet baffles (-3db), a Kuryakin Hypercharger with K&N filter and a Cobra FI2000R fueler.

    Cop said I should adjust my fueler to lower my exhaust noise.
    SAY WHAT???:bigsmiley30:

    Is this guy crazy or can I actually lower my exhaust noise at 2000rpm by adjusting my fueler?
     
  2. glider

    glider Veteran Member

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    Leaning it out will reduce the exhaust note just a bit but you would need his equipment to see the difference.
     
  3. cdn-bigfoot

    cdn-bigfoot Junior Member

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    That's what I said to him. I would need an accurate db meter to test it after the adjustment. I can't imagine it'll drop my noise levels by 4 db at 2000rpm either. That would be cutting the noise level by more than half. Impossible.
    Thanks for confirming an adjustment in fuel may affect noise levels. Who woulda thunk it?

    I'm going to do exactly nothing and wait until I get a ticket before I mess with my bike.

    :bigsmiley18:I kinda feel like a bad boy biker riding an illegal bike and all.:bigsmiley18:
     
  4. glider

    glider Veteran Member

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    If they just tested at idle, you could reduce the first pot but when they go to 2000rpm's all bets are off :D
     
  5. whatyardwork

    whatyardwork Banned

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    Man, makes me want a kill switch for my tach.Why provide them with ammo.
     
  6. Trek

    Trek Junior Member

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    AMEN to that Smitty.
     
  7. Jack Klarich

    Jack Klarich Expert Member Contributor

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    Decibels By Wire LOL I have no idea probably a guesstimate of the RPM:D
     
  8. cdn-bigfoot

    cdn-bigfoot Junior Member

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    They had a cheap little plastic tachometer they sat on top of the speedo. Cop said it cost 50 bucks. rpm's by induction?

    I'm thinking it's just a bunch of civic politicians that like to hear themselves talk and pass bylaws so they can feel important. I get the impression most cops think this is a crock as much as we do. No doubt the cops will use this to pull over bikes and bikers they don't like the looks of. Most of us with illegal pipes will never get ticketed.

    Still it's MORE GOVERNMENT. And who thinks that's any good?:newsmile077:
     
  9. Jack Klarich

    Jack Klarich Expert Member Contributor

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    Wonder how acurate that is:D
     
  10. Cleftwynd

    Cleftwynd Banned

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    Usually they have a portable tach that clips on a plug wire, they are quite accurate IMO.