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599 cat bypass pipes (2ndary cats only)

Discussion in '612/599' started by YSS, Nov 15, 2009.

  1. YSS

    YSS Formula Junior

    Dec 15, 2005
    336
    SA
    Im interested to hear from anyon who has done this mod.

    1. did you feel the extra hp?
    2. did the car sound any different
    3. any issues with fitment (from ?)

    thanks

    yss
     
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  3. blitzsuprais

    blitzsuprais Rookie

    Aug 22, 2008
    12
    China
    I have changed to KSG muffler, it came with cat replacing pipe.
    1. I did, very smooth over 200km/h.
    2. much louder than before inside the car.
    3. cat replacing pipe needs to be remodified
     

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