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De cat pipe.....

Discussion in 'A4/S4 forum(B5 Chassis)' started by smitch, Oct 25, 2006.

  1. smitch
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    smitch Active Member

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    [Oct 25, 2006]
    Any of you guys got a de cat pipe fitted?

    Had my car chipped and put a K&N on it but wouldn't mind a little more grunt without splashing out too much cash. Seen the pipes on Ebay for about £90 but don't want to fit one if they don't work!

    Also, would the emissions go up and make it fail an MOT???????? :wacko:
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  3. Soupie69uk
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    Soupie69uk Owner

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    [Oct 25, 2006]
    Yeah will fail an mot.

    I have one, is a pain to fit but i can do it easily now.

    You will not notice that much of a gain if any tbh.
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  4. Phantom_A4
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    Phantom_A4 Member

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    [Oct 25, 2006]
    Yep got one too, it will fail an MOT lol if you took it with it on, so keep your cat aside :) Feels a bit pokier in mine as it has 2 cats :(
    #3
  5. JayB5UK
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    JayB5UK Member

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    [Oct 25, 2006]
    Definite better response and less lag down low in the revs I noticed, plus it's more keen to rev up to about 5k or so if you're stuck in a gear overtaking etc. Sounds weird sometimes though. Anyone elses a bit raspy?

    P.S. I do actually have a spare one as well as the one fitted. Am looking into getting some made soon so watch this space.

    Get an MOT then remove the cat that day, I did..
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  6. S4_dan
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    S4_dan Fire up the Quattro!

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    [Oct 26, 2006]
    I'm getting my S4 de-catted and full stainless system fitted next thursday so will report back then what advantages / disadvantages it has.

    Good thing is, it's a custom exhaust all done for £489. :)

    Heard that removing the cats gives higher flow of gases, freer revving and better engine timing advancement due to breathing easier. So with a map, surely thats a good thing (if your map is done after the zorst mod)
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  7. SonicDeathmonkey
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    SonicDeathmonkey Member

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    [Oct 27, 2006]
    I am having my S4 fittted with a full sports cat system tomorrow, so will let you know how that goes!!!!
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  8. S4_dan
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    S4_dan Fire up the Quattro!

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    [Oct 31, 2006]
    Sonic...how did it go?

    Getting mine done on thursday, providing it is worth doing?!?!
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