Kreissieg Spiral Y-pipe for 2.7. Gimmick? | Page 2 | FerrariChat

Kreissieg Spiral Y-pipe for 2.7. Gimmick?

Discussion in '348/355' started by ShineKen, Dec 11, 2016.

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  1. ShineKen

    ShineKen F1 World Champ
    Silver Subscribed

    Aug 3, 2007
    16,405
    Southern California
    Full Name:
    Nostradamus
    I'm still waiting for the day he announces a 450 hp 9500 Rpm 2.7 motronic chip tune.
     
  2. INTMD8

    INTMD8 F1 Veteran
    Owner

    Jun 10, 2007
    6,485
    Lake Villa IL
    Ha, thanks guys! I can help you out if you need one. Dave, any interest in making some original-ish flanges or is no one that picky? (The ones I had made were just from flat stock)
     
  3. MAD828

    MAD828 F1 Rookie
    Silver Subscribed

    Oct 8, 2011
    2,539
    Sydney
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    Elliott Caras
    I have Capristo bypass and Tubi headers, my OEM Y pipe needs welding on the heat shield as it is rattling at the moment.

    All these mods are reversible and for me getting the sound just right is more important than originality for my enjoyment of the car.

    I was going to get a fabspeed one but the price is high for what it is. If James is keen to make one I'm a buyer!
     
  4. Dave rocks

    Dave rocks F1 World Champ
    BANNED

    Nov 23, 2012
    16,047
    Orchard Park, NY
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    Dave Lelonek
    We can discuss, Jim :)
     
  5. Rob'Z

    Rob'Z Formula 3

    Mar 29, 2008
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    Robert
    Looks like I need to get going if I want to be a player in the game. ;-)
     
  6. ernie

    ernie Two Time F1 World Champ
    Lifetime Rossa Owner

    Nov 19, 2001
    22,574
    The Brickyard
    Full Name:
    The Bad Guy
    I have some questions regarding the Kreissieg pipes.

    How much power gain do either of these y-pipes make over the factory unit?
    If it doesn't produce more power then what is the point?

    Where does it make that gain, and for how long?
    Is it a bottom end, mid range, or topped gain? Is the gain the midrange and held through the rev range?

    Where are the before and after dyno sheets?

    The reason I ask is because the purpose of bypassing the mufflers is so that you free up the restriction in the exhaust system, and thus SHOULD make more power. So........if these don't make more power then what is the point? Especially for $1500! They had better make some more power.
     
    F456M likes this.
  7. Rob'Z

    Rob'Z Formula 3

    Mar 29, 2008
    1,024
    Tucson,AZ
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    Robert
    I'd guess the gain is minimal. A better reason would be reduced heat as they eliminate the two small cats in the stock y-pipe.

    And fwiw the merge on the stock y-pipe is horrible. Is basically a wall separating two pipes hitting at a 30 degree angle.

    Plus the one for my car will also take up the space where the bypass valve used to reside. :)
     
  8. ShineKen

    ShineKen F1 World Champ
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    Aug 3, 2007
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    Nostradamus
    Just completed my collection of 3 Japanese F355 magazines and decided to fiddle around with the Google Image translator app. I love technology :).

    “Indispensable for F1 sound reproduction”
    Image Unavailable, Please Login
     
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  9. bobzdar

    bobzdar F1 Veteran

    Sep 22, 2008
    6,367
    Richmond
    Full Name:
    Pete
    I ordered the spiral kreissieg pipe for my 2.7, will let folks know how it goes. I'm running an unmuffled challenge exhaust with high flow primary cats and was looking at decatting the bypass, but current prices of used 2.7 pipes are similar to the kreissieg and I don't want to ruin the stock piece. I figured if I'm going to do it might as well go nuts and try out the swirl pipe.
     
    MAD828 and ShineKen like this.
  10. ChoonHound

    ChoonHound Formula 3
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    May 13, 2022
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    Lucas
    I feel like they’re just playing with the design to tune the sound.


    Sent from my iPhone using FerrariChat
     
  11. bobzdar

    bobzdar F1 Veteran

    Sep 22, 2008
    6,367
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    Pete
    Agree - but removing the cats should be worth some power, and the shorter merge collector a little more still, so if it also improves sound....I figure why not?
     
  12. ChoonHound

    ChoonHound Formula 3
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    May 13, 2022
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    Lucas
    And it looks cool! I would do the same if I were you.
     
  13. Johnnieblack115

    Johnnieblack115 Karting

    Nov 18, 2022
    218
    Massachusetts
    Full Name:
    Jonathan Walker
    Need to post a vid after install!


    Sent from my iPhone using FerrariChat.com mobile app
     

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