308QV Whistling Noise Under Load | FerrariChat
Buy

308QV Whistling Noise Under Load

Discussion in '308/328' started by sdsdesilva, Apr 20, 2012.

This site may earn a commission from merchant affiliate links, including eBay, Amazon, Skimlinks, and others.

  1. sdsdesilva

    sdsdesilva Rookie

    Apr 10, 2005
    39
    Cambridge UK
    Full Name:
    sdsdesilva
    #1 sdsdesilva, Apr 20, 2012
    I have a whistling noise coming when acclerating (when engine is under load). It appears to be coming from induction? Car idles ok and runs fine. It also has tubi exhaust so can't be the screens. Has anybody here experienced this problem.
     
  2. ClydeM

    ClydeM F1 World Champ
    Owner Rossa Subscribed

    Nov 4, 2003
    11,894
    Wayne, NJ
    Full Name:
    Clyde E. McMurdy
    #2 ClydeM, Apr 20, 2012
    check the archive. There's lots of posts on this phenomena.
    It's probably your exhaust tips.
    And there's an easy test to check them.
     
  3. MNExotics

    MNExotics F1 Rookie
    BANNED

    Dec 13, 2010
    2,631
    Good Thunder
    Full Name:
    Ben Gruenzner
    #3 MNExotics, Apr 20, 2012
    I have heard this in i cars and is more pronounced when a K&N style filter is used. I believe that it is caused from air rushing past the metering plate. I have only heard it under part load and never from full throttle. Not sure if this helps bit its is what I have observed.
     
  4. Crowndog

    Crowndog F1 Veteran

    Jul 16, 2011
    7,042
    Fairfield,Pa
    Full Name:
    Robert
    #4 Crowndog, Apr 20, 2012
    What year is the car?
     
  5. TacElf

    TacElf Formula 3
    Owner

    Aug 15, 2010
    1,719
    Seattle area
    Full Name:
    Jeff
    #5 TacElf, Apr 20, 2012
    Mine has a slight high-pitch whistle which only happens at part throttle when under load, and I can modulate it with the gas pedal: More/less pedal makes the whistle go away. I have a K&N filter (as mentioned above) and a tubi exhaust. Totally harmless as far as I can tell. Most of the time I can't hear it because of the other glorious sounds of the engine.
     
  6. Fave

    Fave F1 Rookie

    Aug 12, 2010
    4,157
    Tarana
    Full Name:
    L. Ike Hunt
    #6 Fave, Apr 20, 2012
    :DIt's just whistling while it works.
     
  7. fastradio

    fastradio F1 Rookie
    BANNED Professional Ferrari Technician

    Apr 26, 2006
    3,664
    New England
    Full Name:
    David Feinberg
    #7 fastradio, Apr 20, 2012
    Finally, a technical answer that makes sense!
     
  8. Matto

    Matto Formula 3

    Dec 26, 2011
    2,085
    Mooresville, NC USA
    Full Name:
    Matthew
    #8 Matto, Apr 20, 2012
    +1 :D Corroborating.....I hear it too, under acceleration. K&N also. If you listen closely, it's whistling "That's Amore'".
     
  9. sdsdesilva

    sdsdesilva Rookie

    Apr 10, 2005
    39
    Cambridge UK
    Full Name:
    sdsdesilva
    #9 sdsdesilva, Apr 21, 2012
    Yes i have just done the major and replaced with K&N filter, so will try the old filter and see if the spooling/whistling sound goes away, Many thanks for all the replies.
     
  10. MNExotics

    MNExotics F1 Rookie
    BANNED

    Dec 13, 2010
    2,631
    Good Thunder
    Full Name:
    Ben Gruenzner
    #10 MNExotics, Apr 21, 2012
    If your car is a right hand drive I would assume that you hear it more due to being closer to the intake scoop compared to us with left hand drive.
     
  11. TacElf

    TacElf Formula 3
    Owner

    Aug 15, 2010
    1,719
    Seattle area
    Full Name:
    Jeff
    #11 TacElf, Apr 21, 2012
    Technical and accurate. Love it!
     
  12. sdsdesilva

    sdsdesilva Rookie

    Apr 10, 2005
    39
    Cambridge UK
    Full Name:
    sdsdesilva
    #12 sdsdesilva, May 5, 2012
    Finally managed to put a UFI standard filter and test run today. No more whistling noise. Thanks for all the input.
     
  13. Matto

    Matto Formula 3

    Dec 26, 2011
    2,085
    Mooresville, NC USA
    Full Name:
    Matthew
    #13 Matto, May 5, 2012
    K&Ns are just more musical...that's all.
     
  14. Dr Tommy Cosgrove

    Dr Tommy Cosgrove Three Time F1 World Champ
    Owner Rossa Subscribed

    May 4, 2001
    36,431
    Birmingham, AL
    Full Name:
    Tommy
    #14 Dr Tommy Cosgrove, May 6, 2012
    I think all the injected cars do this.

    In any event, it is normal so don't sweat it
     

Share This Page