Laguna Seca + CS Noise + Super Trapp... what do you think of this idear? | FerrariChat
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Laguna Seca + CS Noise + Super Trapp... what do you think of this idear?

Discussion in '360/430' started by Marshall, Oct 30, 2006.

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  1. Marshall

    Marshall Karting

    Oct 7, 2005
    105
    Tahoe
    #1 Marshall, Oct 30, 2006
    I got a stand by spot at Laguna Seca for this Friday. Unfortunatly it is a 92Db sound restircition day, and I can't bring a spare car in case I get meat balled for sound violation (unless I put a tow hitch on the RS4...). So here is my idea for the CS... I'd appreciate your input..

    Fabricate a clamp that attaches to the outside exhaust pipe that attaches a larger diameter pipe over the exhaust tip flange. This larger pipe will have a super trapp connected on it. Low impact, lower noise.

    Bad idea? Odd but good idea? Or do you think I should just but a 90 degree bend down and to the left (away form the soudn check station at Turn 5 & 6).

    Thanks!
     
  2. Valence

    Valence Formula Junior

    Jan 20, 2004
    883
    Charlottesville, VA
    Full Name:
    Chris& Brian Coffing
    #2 Valence, Oct 30, 2006
    Someone on here had good luck clamping tin cans to the exhaust tips, with holes punched in the cans.
     
  3. Ingenere

    Ingenere F1 Veteran
    Owner Silver Subscribed

    Dec 11, 2001
    6,451
    On the Limit
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    Dino
    #3 Ingenere, Oct 30, 2006
    Just take it easy as you go under the bridge and it will be fine. I had a TR there with a straight exhaust (110db), and just took it easy past the sensor and never got hassled.
     
  4. Gary(SF)

    Gary(SF) F1 Rookie

    Oct 13, 2003
    3,637
    Los Altos Hills, CA
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    Gary B.
    #4 Gary(SF), Oct 31, 2006
    Unfortunately they also have taken to roaming the track with a portable unit...don't know if they do it every event or not, but it is in their playbook.

    Gary
     
  5. Marshall

    Marshall Karting

    Oct 7, 2005
    105
    Tahoe
    #5 Marshall, Oct 31, 2006

    Yeah, that seems to be the newest method that they have been doing consistantly. I hate to drive 5 hours and get in two fun, fast, and loud laps, then drive home. They don't seem to pay well with experimentation once we are there. :)

    Anyhow, any thoughts on the ol' SuperTrapp?
     
  6. Financialman

    Financialman Formula 3

    Sep 8, 2005
    1,841
    San Jose CA
    Full Name:
    Dan Carpenter
    #6 Financialman, Oct 31, 2006
    This should work, I saw a 355 with no cats do this exact thing last year and it passed sound. Looked pretty dorky but it workrd!! Dan
     
  7. Marshall

    Marshall Karting

    Oct 7, 2005
    105
    Tahoe
    #7 Marshall, Oct 31, 2006
    Looking dorky isn't a problem... its actually one of my strong points. Thanks!
     
  8. RotarySwingGolf

    RotarySwingGolf Formula Junior

    Dec 24, 2011
    490
    Florida and Idaho
    #8 RotarySwingGolf, May 28, 2013
    Old thread but still relevant with all the track noise restrictions. Did you end up using the SuperTrapps and did they work?
     
  9. Ferrari Now or Never

    Ferrari Now or Never Rookie

    Jul 13, 2012
    39
    Simi Valley, CA
    Full Name:
    Linsey Orr
    #9 Ferrari Now or Never, May 31, 2013
    I raced a Sports 2000 (SCCA) at Laguna Seca in 1990. Before I went, a fellow racer told me that I would exceed the sound limit with the open exhaust I normally used at Willow Springs. The cheap fix was to slice a beer can in half along its length, after cutting off the top and bottom, and attach one half to the exhaust exit. So you ended up with a half-cylinder extension that deflected the sound in a direction opposite from that of the measuring device. Those were the days where the measuring device location was known and fixed. It seemed to work.
     
  10. fatbillybob

    fatbillybob Two Time F1 World Champ
    Consultant Owner

    Aug 10, 2002
    29,004
    socal
    #10 fatbillybob, May 31, 2013
    Last edited by a moderator: Sep 7, 2017
  11. RotarySwingGolf

    RotarySwingGolf Formula Junior

    Dec 24, 2011
    490
    Florida and Idaho
    #11 RotarySwingGolf, Jun 1, 2013
    Isn't this the same setup that the guy used and melted his f1 pump hose? I don't have an f1 but if it melted that from the heat in the bay it can surely cause other damage
     
  12. cm2

    cm2 Formula 3

    Sep 26, 2012
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    Nathan
    #12 cm2, Jun 1, 2013
    I'll be at Laguna tomorrow on a 92db day... With no special pipe. I'll have to see what happens...
     
  13. cm2

    cm2 Formula 3

    Sep 26, 2012
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    Nathan
    #13 cm2, Jun 2, 2013
    I have a Fuchs back box, but otherwise stock. Was told I measured 90.5db foot on the floor up the hill in 4th gear. Damp cold air. Not convinced they weren't taking it easy on us from the sound booth today - there were some loud ones goin round. 92db day, and didn't get meatballed all day. Good times.
     
  14. sparetireless

    sparetireless Formula 3

    Nov 2, 2003
    1,587
    #14 sparetireless, Jun 3, 2013
    what happens to performance? does it stay the same?
     
  15. arizonaitalian

    arizonaitalian Two Time F1 World Champ
    Owner Silver Subscribed

    Oct 29, 2010
    20,507
    Wyoming
    #15 arizonaitalian, Jun 3, 2013
    What car and exhaust were you running? A CS?


    Sent from my iPhone using Tapatalk
     
  16. Evan.Fiorentino

    Evan.Fiorentino F1 Rookie

    Aug 23, 2005
    2,854
    South East Florida
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    Evan
    #16 Evan.Fiorentino, Jun 3, 2013
    Could you run a turn down?
     
  17. cm2

    cm2 Formula 3

    Sep 26, 2012
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    Nathan
    #17 cm2, Jun 3, 2013
    Sorry, it was a 360 Modena with a Fuchs exhaust. Everything else stock.

    The ones that work best at Laguna seem to be turn ups to the left. L pipe just clamped or inserted and held with a set screw into the stock tips.
     
  18. cm2

    cm2 Formula 3

    Sep 26, 2012
    1,451
    SF Bay
    Full Name:
    Nathan
    #18 cm2, Jun 3, 2013
    Last edited by a moderator: Sep 7, 2017

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