1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

High flow cat, do I need it remapped to clear the CEL?

Discussion in 'Audi S4/A4/A4 Cab (B7 Chassis)' started by jakeA42T, Sep 7, 2012.

  1. jakeA42T
    Offline

    jakeA42T Member

    Joined:
    Oct 21, 2011
    Messages:
    90
    Likes Received:
    0
    [Sep 7, 2012]
    Was told by AMD that it would cost roughly £500 to install the Sports Cat and remap it as it need to be done to clear the CEL, is this true?
    :think:
    #1
  2. Ads

    Ads

    [Dec 22, 2014]

  3. Brodster
    Offline

    Brodster Shark Performance In Scotland Regional Rep VCDS Map User

    Joined:
    Mar 17, 2011
    Messages:
    3,469
    Likes Received:
    815
    [Sep 7, 2012]
    If the sports cat is mated to the remainder of the matching sports exhaust then yes it needs to be remapped to take account of the increased air flow which causes the balance of air and petrol mix flowing into the engine to be upset. Although the engine management system will try to compensate by using the sensors on the car to calculate the changes it is quite possible that the increased airflow will cause this mixture to be lean (too much air and not enough fuel). This is where the remap is needed.
    Last edited: Sep 7, 2012
    #2
  4. jakeA42T
    Offline

    jakeA42T Member

    Joined:
    Oct 21, 2011
    Messages:
    90
    Likes Received:
    0
    [Sep 7, 2012]
    At the moment I only have a stock exhaust, thought maybe a spacer would help not sure I really want to remap it yet.
    #3
  5. hades-
    Offline

    hades- Yorkshire & Humber Rep. Regional Rep VCDS Map User

    Joined:
    Jul 8, 2008
    Messages:
    9,072
    Likes Received:
    557
    [Sep 7, 2012]
    a spacer will keep the light off in most cases
    sometimes they just dont work tho.
    #4
  6. hades-
    Offline

    hades- Yorkshire & Humber Rep. Regional Rep VCDS Map User

    Joined:
    Jul 8, 2008
    Messages:
    9,072
    Likes Received:
    557
    [Sep 7, 2012]
    #5

Share This Page