high flow cats

Discussion in 'The Garage' started by bigjohnson4.6gt, Feb 15, 2007.

  1. bigjohnson4.6gt

    bigjohnson4.6gt Well-Known Member

    Messages:
    3,322
    Likes Received:
    0
    Joined:
    Dec 23, 2006
    whats the difference between these and regular cats? does it make a difference in sound or anything? are they illegal?
     
  2. Red96GT

    Red96GT Legend

    Messages:
    5,374
    Likes Received:
    0
    Joined:
    Sep 23, 2006
    They are technically legal however I have heard that sometimes they will throw the Check Engine Light on. The do make the car louder as opposed to stock cats. High flow cats are the happy medium between rediculously loud and lost torque (less backpressure) of an offroad H, and the quiet stock H.

    They are way more expensive than O/R middies though. :mad:
     
  3. bigjohnson4.6gt

    bigjohnson4.6gt Well-Known Member

    Messages:
    3,322
    Likes Received:
    0
    Joined:
    Dec 23, 2006
    thanks pal
     
  4. Twista

    Twista Legend

    Messages:
    6,042
    Likes Received:
    76
    Joined:
    Mar 7, 2006