ABY de-cat pipes

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  • JamesHarrold
    S2Forum Addict
    • Feb 2008
    • 245
    • Country: United Kingdom

    #1

    ABY de-cat pipes

    Dont really know what everyones opinion is, but was going to get rid of the cats on my aby coupe....Question is....is it worth doing and has anybody got a couple they want to part with?
    On the same subject, I am really hoping it doesn't increase exhaust noise too much....I f***ing HATE chavvy sounding cars!

    Any help would be greatly appreciated as always gents

    Cheers
    James
  • johne
    S2Forum Extremist
    • Apr 2007
    • 1406
    • Country: United Kingdom

    #2
    James,

    I tried it using a set of decat pipes I bought. Didn't notice any increase in noise but also didn't notice any increase in anything else and put the cats back on for good before the next MOT.

    So, yes I have a set of ABY decat pipes available but being honest can't see that it's worth it on a normal car.

    John

    Comment

    • JamesHarrold
      S2Forum Addict
      • Feb 2008
      • 245
      • Country: United Kingdom

      #3
      Thanks for the info John...

      I am sure I read on here that someone found a little increase in BHP and torque and that spool up was slightly earlier...Not that I am expecting miracles by getting rid of the cats...just nice to know!

      Still not decided, but If I do go for it I will let you know...How much are you asking for them?

      Cheers
      James

      Comment

      • s2driveruk
        Super Moderator
        • Jul 2003
        • 12696
        • Country: England

        #4
        totally opposite experience with mine, definately increased the noise and also made the car feel much crisper on the throttle and liberated a few ponies too I think. Seat of the pants suggests so, r/road will verify soon enough i hope...
        sigpic

        1992 3b S2 Coupe

        Comment

        • johne
          S2Forum Extremist
          • Apr 2007
          • 1406
          • Country: United Kingdom

          #5
          As my cats are now bolted up with stainless steel bolts, it wouldn't be too difficult to do a before and after at Dest's rolling road session in September using my car as the guinea pig if people are interested?

          John

          Comment

          • Fat Audi 80
            Super Moderator
            • Jan 2004
            • 10547
            • Country: England

            #6
            Originally posted by s2driveruk
            totally opposite experience with mine, definately increased the noise and also made the car feel much crisper on the throttle and liberated a few ponies too I think. Seat of the pants suggests so, r/road will verify soon enough i hope...


            The same as David, I hate my CATS they make the car slower, quieter and less fun to drive.

            Remember: You will need them every year at MOT time. (Only putting them on once a year is a good way to save them too.. )

            Cheers,

            Steve.
            The Perfectionist
            sigpic
            Audi Class Concours winner Stoner Park 2014, ADI Concours D'Elegance Class Winner 2008, Runner up 2014. Winner, S2Forum Show'n'Shine Billing 2006 & 2008.

            Comment

            • Rusty
              Super Moderator
              • Jun 2004
              • 18953
              • Country: United Kingdom

              #7
              Sports cat is the best option on an ABY, saves messing about @ MOT time. My car ran well with the cats on and is a tad better with the single box and sports cat, guess it's a matter of suck it and see. Any custom exhasut place should be able to sort you out with decats for £100 or so.
              Cheers'en, AndyC
              1994 ABY Coupe - Projekt Alpinweiss

              Comment

              • dest
                S2Forum Freak
                • Feb 2006
                • 4287
                • Country: England

                #8
                Mine got a LOT louder when i took the cats off, but that was with a straight through system, no centre box and just a Milltek rear box.
                Definitly made it pull better though

                Comment

                • JamesHarrold
                  S2Forum Addict
                  • Feb 2008
                  • 245
                  • Country: United Kingdom

                  #9
                  Thanks for all the comments guys...
                  Will be running a standard exhaust. The cats are non Audi, so I am guessing not quite as free flowing anyway. The car is homefried which again hopefully suggests that removing the cats will aid breathing slighly.

                  Have decided I am going to give it a try anyway. As you say Steve, they are fairly easy to replace and can put them back on when MOT time comes round.

                  Just need to find a pair of bypass pipes now...Do you want to sell yours John? (johne)

                  Cheers
                  James

                  Comment

                  • Fat Audi 80
                    Super Moderator
                    • Jan 2004
                    • 10547
                    • Country: England

                    #10
                    Seriously, you will love it! (It doesn't sound chavvy at all, just more meaty and powerful sounding! )
                    The Perfectionist
                    sigpic
                    Audi Class Concours winner Stoner Park 2014, ADI Concours D'Elegance Class Winner 2008, Runner up 2014. Winner, S2Forum Show'n'Shine Billing 2006 & 2008.

                    Comment

                    • JamesHarrold
                      S2Forum Addict
                      • Feb 2008
                      • 245
                      • Country: United Kingdom

                      #11
                      Thanks Steve....

                      Just need to find a pair now...

                      James

                      Comment

                      • JamesHarrold
                        S2Forum Addict
                        • Feb 2008
                        • 245
                        • Country: United Kingdom

                        #12
                        Anybody...?

                        James

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                        • mcandmar
                          S2Forum Zealot
                          • Apr 2004
                          • 5118
                          • Country: Ireland

                          #13
                          ebay.de, ususally a little under €200 for the pair.
                          91CQ20v - Gone to a new home
                          93UR-S4 - The Magic Carpet
                          94S2Bus - The Emerald Express

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                          • Henkjan
                            S2Forum Extremist
                            • Aug 2003
                            • 1705
                            • Country: Netherlands

                            #14
                            Originally posted by JamesHarrold
                            Just need to find a pair now...

                            James
                            PM me your e-mail address, I know a bloke who has a set available


                            and yes, i support the positive effects of having decat pipes instead of cats, much improved spoolup under real road conditions, and a bit better noise.

                            Comment

                            • Tommen
                              S2Forum Buff
                              • Feb 2008
                              • 38
                              • Home: Norway Current: United States

                              #15
                              Originally posted by Henkjan
                              I know a bloke who has a set available
                              only one set?

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