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  1. #1
    Craig Cull's Avatar
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    Decat pipe, engine warning light??

    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

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  3. #2
    Paradox1's Avatar
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    yeah that's normal mate,just get it mapped out.

  4. #3
    Craig Cull's Avatar
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    Spot on mate! Thanks for your help

  5. #4
    chrisa4quat's Avatar
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    This happened to mine. Got it mapped at work. What a difference
    Imola Yellow A4 DTM. Retro fit cruise and arm rest.
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  6. #5
    bez101's Avatar
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    as above or get a lamba spacer

  7. #6
    chrisa4quat's Avatar
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    Comes up with cat below threshold of you plug in I bet
    Imola Yellow A4 DTM. Retro fit cruise and arm rest.
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  8. #7
    Craig Cull's Avatar
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    Quote Originally Posted by chrisa4quat View Post
    Comes up with cat below threshold of you plug in I bet
    thanks, is yours rediculously loud in comparison to standard? my mr's can here me coming from a mile away lol

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    Craig Cull's Avatar
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    Quote Originally Posted by bez101 View Post
    as above or get a lamba spacer
    lamba spacer? were would i find one of them mate?

  10. #9
    chrisa4quat's Avatar
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    It's just how I want it. Not stupid but loud enough lol. Just get it mapped
    Imola Yellow A4 DTM. Retro fit cruise and arm rest.
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    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 ?

  12. #11
    bez101's Avatar
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    Quote Originally Posted by Marrow View Post
    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 ?
    there u go i use the angled ones cos they sit better
    but you can get a stright 1 if needed
    Lamba Boss Exhaust Lambda Spacer Oxygen Sensor Extender Decat M18 1.5mm | eBay

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    cheers mate

  14. #13
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    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

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    Quote Originally Posted by Phantom_A4 View Post
    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
    Ye I have noiticed theres less for sale why is this?
    New MOT regs coming in possibly ?

  16. #15
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    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!
    Audi DTM edition, Sprint Blue, MRC remap, milltek, RS4 RARB.

  17. #16
    bez101's Avatar
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    Quote Originally Posted by spider74 View Post
    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!
    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

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    spider74's Avatar
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    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.
    Audi DTM edition, Sprint Blue, MRC remap, milltek, RS4 RARB.

  19. #18
    bez101's Avatar
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    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

  20. #19
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    great thanks a lot, i'll give them a shout
    Audi DTM edition, Sprint Blue, MRC remap, milltek, RS4 RARB.

  21. #20
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    how much do exhaust uk charge for fitting a decat/test pipe ? Would they supply and fit spacer to remove cel also ?

  22. #21
    solaris's Avatar
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    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
    If it's not longitudinal and it's not Quattro..it's not an Audi
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    2005 A4 DTM 2.0 TFSi Quattro :364Bhp/477NM - Mapped by MRC Tuning
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  23. #22
    bez101's Avatar
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    Quote Originally Posted by Marrow View Post
    how much do exhaust uk charge for fitting a decat/test pipe ? Would they supply and fit spacer to remove cel also ?
    call them mention lee
    they dont supply the spacer get 1 from ebay and they will fit it for you
    ask for matt

 

 

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