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De-cat

Discussion in 'A3/S3 Forum (8L Chassis)' started by Turboman-a3, Jun 15, 2010.

  1. Turboman-a3
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    Turboman-a3 speed thrills

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    [Jun 15, 2010]
    Hi guys just wondering where I can get a de-cat for my 1996 a3 1.8t ? Is it worth knocking out the centre I just couldn't believe the restrictiveness of the downpipe behind the turbo
    I'm having a custom exhaust built soon and they said it would be cheaper to buy a decat then for them to make one? Any help apreiciated guys
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  3. Welly
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    Welly VX220 SC Driver :)

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    [Jun 15, 2010]
    #2
  4. Turboman-a3
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    Turboman-a3 speed thrills

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    [Jun 15, 2010]
    Sweet looks just what I want it says fits 1998 onwards but it should fit a 1996 surely? If not I'm sur they can adapt it for me cheers welly
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  5. Welly
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    Welly VX220 SC Driver :)

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    [Jun 15, 2010]
    Yeah, if It's got a K03 turbo it will be fine.
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  6. Bigphil92
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    Bigphil92 Member

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    [Jun 15, 2010]
    what if it has a ko3s turbo?
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  7. JD09
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    JD09 I'm not modding, I'm improving VCDS Map User

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    [Jun 15, 2010]
    Same housing, just K04 internals IIRC, so would take the same downpipe.
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  8. wibble111
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    wibble111 needs to scratch the itch

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    [Jun 15, 2010]
    Bit off topic but I've often wondered if removing the centre box would give a slightly more aggressive exhaust note ?
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  9. Welly
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    Welly VX220 SC Driver :)

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    [Jun 15, 2010]
    K03S is exactly the same shape chassis as the K03 (with the exception of the cold side outlet), however has a more efficient and better design compressor wheel than the K03.

    The K03 compressor wheel has12 blades, the K03S only has 8, and they have a deeper pitch. Basically, it is a revised model of the K03-011 (which was fitted to most K03 VAG engine). The K03-052, 053 and 058 are the revised (K03S) models.

    Not quite a K03 with K04 internals, although they can be bought as a hybrid.

    Picture of the two compared:

    [​IMG]

    In answer to your question, yes, itt will fit. Any downpipe that fits a K03 WILL fit a K03S.
    #8
  10. Welly
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    Welly VX220 SC Driver :)

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    [Jun 15, 2010]
    Yes it will, removing any silencing from the exhaust system will increase the level of volume at the tailpipe.
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