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

Decat pipe, engine warning light??

Discussion in 'Audi S4/A4/A4 Cab (B7 Chassis)' started by Craig Cull, Jan 28, 2012.

  1. Craig Cull
    Offline

    Craig Cull Well-Known Member

    Joined:
    Oct 9, 2011
    Messages:
    1,574
    Likes Received:
    297
    [Jan 28, 2012]
    Hi guys hope you can help??

    Installed my decat pipe to my A4 2.0tfsu quattro spec ed.
    After3 days of nice sound and a much more responsive drive,
    The engine warning light has come on. Is this something to worrie about?
    Is there a way round this?? Or shall I just put the cat bk on?
    As I don't want to damage anything. But it was a tw*t to fit lol
    And wanted to remap after I put a front mount on her.

    Any help would be brill :)
    #1
  2. Paradox1
    Offline

    Paradox1 Active Member

    Joined:
    Aug 3, 2011
    Messages:
    1,833
    Likes Received:
    86
    [Jan 28, 2012]
    yeah that's normal mate,just get it mapped out.
    #2
  3. Craig Cull
    Offline

    Craig Cull Well-Known Member

    Joined:
    Oct 9, 2011
    Messages:
    1,574
    Likes Received:
    297
    [Jan 28, 2012]
    Spot on mate! Thanks for your help :)
    #3
  4. chrisa4quat
    Offline

    chrisa4quat Member

    Joined:
    Sep 21, 2004
    Messages:
    897
    Likes Received:
    11
    [Jan 28, 2012]
    This happened to mine. Got it mapped at work. What a difference
    #4
  5. hades-
    Offline

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

    Joined:
    Jul 8, 2008
    Messages:
    9,253
    Likes Received:
    597
    [Jan 28, 2012]
    as above or get a lamba spacer
    #5
  6. chrisa4quat
    Offline

    chrisa4quat Member

    Joined:
    Sep 21, 2004
    Messages:
    897
    Likes Received:
    11
    [Jan 28, 2012]
    Comes up with cat below threshold of you plug in I bet
    #6
  7. Craig Cull
    Offline

    Craig Cull Well-Known Member

    Joined:
    Oct 9, 2011
    Messages:
    1,574
    Likes Received:
    297
    [Jan 29, 2012]
    thanks, is yours rediculously loud in comparison to standard? my mr's can here me coming from a mile away lol
    #7
  8. Craig Cull
    Offline

    Craig Cull Well-Known Member

    Joined:
    Oct 9, 2011
    Messages:
    1,574
    Likes Received:
    297
    [Jan 29, 2012]
    lamba spacer? were would i find one of them mate?
    #8
  9. chrisa4quat
    Offline

    chrisa4quat Member

    Joined:
    Sep 21, 2004
    Messages:
    897
    Likes Received:
    11
    [Jan 29, 2012]
    It's just how I want it. Not stupid but loud enough lol. Just get it mapped
    #9
  10. Marrow
    Offline

    Marrow Member

    Joined:
    Mar 18, 2009
    Messages:
    589
    Likes Received:
    3
    [Jan 29, 2012]
    ye were can u get a spacer from already stage one and want a decat but been putting it off due to cel and dont want the expense of another remap ?
    #10
  11. hades-
    Offline

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

    Joined:
    Jul 8, 2008
    Messages:
    9,253
    Likes Received:
    597
    [Jan 29, 2012]
    #11
  12. Marrow
    Offline

    Marrow Member

    Joined:
    Mar 18, 2009
    Messages:
    589
    Likes Received:
    3
    [Jan 29, 2012]
    cheers mate
    #12
  13. Phantom_A4
    Offline

    Phantom_A4 Member

    Joined:
    Jan 7, 2006
    Messages:
    563
    Likes Received:
    1
    [Jan 30, 2012]
    Where did you guys get your decats from? - I did see one on ebay a few weeks ago for about £90? - Was thinking of just gutting my cat..... as I can't find them anymore.

    Any help is appreciated :)
    #13
  14. Marrow
    Offline

    Marrow Member

    Joined:
    Mar 18, 2009
    Messages:
    589
    Likes Received:
    3
    [Jan 30, 2012]
    Ye I have noiticed theres less for sale why is this?
    New MOT regs coming in possibly ?
    #14
  15. spider74
    Offline

    spider74 Member

    Joined:
    Feb 7, 2012
    Messages:
    97
    Likes Received:
    9
    [Feb 7, 2012]
    The most common place to get them is the USA, they call them a "test pipe" so try searching for that? I will have a spare up for sale soon and will post it up in the classifieds. The factory Cat is really restrictive, getting rid of it was like a second map! they vary in size, shape and price. A stainless 2.5" good quality one can cost as little as £70 but you need to ship it over the water.

    Also given the removal of the bung in the exhaust your stock pipes will be louder. I actually fitted a milltek which gave a quieter more subtle sound. each to there own though. I'm an old git, most of my friends loved the sound!
    #15
  16. hades-
    Offline

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

    Joined:
    Jul 8, 2008
    Messages:
    9,253
    Likes Received:
    597
    [Feb 7, 2012]
    i dont get why you say you have to ship them from the usa ?
    theres pleany of places in the uk that can supply a de-cat pipe
    #16
  17. spider74
    Offline

    spider74 Member

    Joined:
    Feb 7, 2012
    Messages:
    97
    Likes Received:
    9
    [Feb 7, 2012]
    sorry mate , was just pointing to a source where I got mine, the posts above indicated that they were in short supply and i (perhaps wrongly) thought if they searched for test pipe instead of decat it might be helpful. I'd certainly never heard it called a test pipe in the uk before. Do you have any places in the UK that can supply them? Im after a 3" with a custom flange on it for a K04 project.
    #17
  18. hades-
    Offline

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

    Joined:
    Jul 8, 2008
    Messages:
    9,253
    Likes Received:
    597
    [Feb 7, 2012]
    call pete or matt at exhaust uk
    mention me and they will sort you they have done quite a few for me
    tell them you need the flange from the S3 K04
    #18
  19. spider74
    Offline

    spider74 Member

    Joined:
    Feb 7, 2012
    Messages:
    97
    Likes Received:
    9
    [Feb 7, 2012]
    great thanks a lot, i'll give them a shout :)
    #19
  20. Marrow
    Offline

    Marrow Member

    Joined:
    Mar 18, 2009
    Messages:
    589
    Likes Received:
    3
    [Feb 7, 2012]
    how much do exhaust uk charge for fitting a decat/test pipe ? Would they supply and fit spacer to remove cel also ?
    #20
  21. solaris
    Offline

    solaris Member

    Joined:
    Feb 27, 2010
    Messages:
    415
    Likes Received:
    15
    [Feb 7, 2012]
    This is what im using it goes from 4" to 3" so it matches the size of the hotside on the turbo. I told them I was using it with a K04 so they kindly included a K04 flange with the pipe. Its a bit pricy but the quality of the fabrication is second to none.

    R.A.I. Motorsport B7A4 2.0T Test Pipe
    #21
  22. hades-
    Offline

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

    Joined:
    Jul 8, 2008
    Messages:
    9,253
    Likes Received:
    597
    [Feb 7, 2012]
    call them mention lee
    they dont supply the spacer get 1 from ebay and they will fit it for you
    ask for matt
    #22

Share This Page