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458 Anyone ever removed cats with stock exhaust

Discussion in '458 Italia/488/F8' started by jc1, Aug 7, 2024.

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  1. jc1

    jc1 Formula Junior

    Feb 9, 2021
    283
    Greenville, SC
    Full Name:
    Joey (2012 458 Spider)
    #1 jc1, Aug 7, 2024
    I would like a little less restriction and better sound but not too interested in a full exhaust. I'm in a state without emissions and curious how the 458 would sound with straight pipes and the stock exhaust.

    Also - what is the best sounding straight pipe?
     
  2. Marty305

    Marty305 Karting

    Dec 21, 2023
    109
    Full Name:
    Marty Sifuentes
    #2 Marty305, Aug 7, 2024
    All cat delete straight pipes sound the same. They are all 3" SS piping. If someone tells you one brand sound better / different than another they are full of it.
     
  3. mdrums

    mdrums F1 Rookie

    Jun 11, 2006
    3,462
    Tampa FL
    #3 mdrums, Aug 7, 2024
    Best sounding...to whom? I prefer an exhaust that helps scavenge exhaust gasses and add's power with a tune for reliability 1st and power second.

    Pipe material, pipe size, do the pipes go from one size up to another and back down, X pipe or not? Overall foundation of the sound is somewhat similar but harmonics and frequency can play a big part due to different exhaust designs.

    Also recorded sound you would listen to on your computer will sound very different in person. Microphones ( outboard or on phone or camera), recording limiter and compression, play back system and speakers all color the actual sound as does real life volume and how the ear reacts to that.
     
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  4. 05F430F1

    05F430F1 F1 Rookie
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    Oct 22, 2005
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    Todd
    #4 05F430F1, Aug 7, 2024
    I need a nap now. Well written


    Sent from my iPhone using FerrariChat
     
  5. Bob in Texas

    Bob in Texas F1 Rookie

    Apr 23, 2012
    2,733
    Just East of Weird
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    Bob
    #5 Bob in Texas, Aug 8, 2024
    I think with no cats, you'll get a CEL as the ECUs will be looking for control signals
     
  6. Eric C

    Eric C F1 World Champ
    Silver Subscribed

    Mar 20, 2009
    11,074
    St. Louis, MO
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    Eric
    #6 Eric C, Aug 8, 2024
    Whistle tips are what you need. It's a very cost effective modification that's very easily reversable.
     
  7. todd cloud

    todd cloud Formula 3

    Jun 21, 2019
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    Todd
    #7 todd cloud, Aug 8, 2024
    100% illegal in all 50 states
    Congratulations, you are now a criminal
     
  8. ACSATCO

    ACSATCO Formula Junior

    Dec 23, 2020
    361
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    AJC
    #8 ACSATCO, Aug 9, 2024
    Todd, please. thats not how it works. you are now a criminal for false accusations. go to jail
     
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  9. 05F430F1

    05F430F1 F1 Rookie
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    Oct 22, 2005
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    Todd
    #9 05F430F1, Aug 9, 2024
    [emoji23]


    Sent from my iPhone using FerrariChat
     
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  10. mdrums

    mdrums F1 Rookie

    Jun 11, 2006
    3,462
    Tampa FL
    #10 mdrums, Aug 9, 2024
    Calm down little buddy!
     
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  11. kinein

    kinein Karting

    Jan 11, 2020
    51
    Full Name:
    Ernest Crawford
    #11 kinein, Aug 10, 2024
    Here is an audio clip with a full Ipe exhaust with 200 cell cat at cruising speed. I believe the straight pipes drone. Someone with straight pipes should be able to answer that part.

    https://youtube.com/shorts/SD3nLNyBzN0
     
  12. version5

    version5 Rookie

    Aug 6, 2014
    22
    Australia
    #12 version5, Aug 19, 2024
    I removed the cats in 2014 Spider and installed straight pipes. I retained the OEM exhaust and OEM headers.(Please note that I am in Australia and subject to different EPA laws)..
    You will get CEL so need to deal with that (I installed a Capristo Wizard).
    I also installed a Forza valve controller which was a good investment and allows your choice of open/close valves.

    Result
    - substantial improvement in sound as to a much higher pitched scream (with valves open) which I was very happy with and was the result that I was looking for (also means it is substantially louder).
    - with valves closed, sound very little difference (if any) in change from original sound (which is a good result as it remains quiet),
    - I have found no droning,
    - you do have a stronger smell due to no cats but not intrusive to me,
    - I found a difference in performance as to acceleration (seat of the pants - not dyno) and I felt it quite noticeably which I was very happy with.

    Hope the above is of assistance.
     

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