Which Option is Best for Plumbing ?

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  • ian4455
    S2Forum Maniac
    • Nov 2010
    • 787
    • Country: England

    #1

    Which Option is Best for Plumbing ?

    Which option is best for recirculated air from the DV ?
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  • re2500
    S2Forum Fiend
    • May 2007
    • 2185
    • Country: Wales

    #2
    Doesnt look to be much difference to be honest. But i would say Pic 2 just because there will be less Jubilees. But not being the pressure side i can t see it making much difference.
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    • Thuppu
      S2Forum Freak
      • Sep 2010
      • 4115
      • Country: Finland

      #3
      Pic 2 is better, you get less air moving backwards to the MAF.

      Here is how I did it: http://koti.mbnet.fi/pro-ht/Audi_URS4/bypass-inlet.jpg

      Audi UrS4 Avant 2.5 20vt - twincharged - Project
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      • ian4455
        S2Forum Maniac
        • Nov 2010
        • 787
        • Country: England

        #4
        Interesting, that opens up my options to start with the pipework. Thanks

        Comment

        • Jamo
          Retired OG Mod
          • Mar 2004
          • 21750
          • Country: United Kingdom

          #5
          Makes no odds really if you angle the input pipe towards the inlet of the turbo so the air is going in the direction of flow

          Comment

          • Thuppu
            S2Forum Freak
            • Sep 2010
            • 4115
            • Country: Finland

            #6
            Worst scenario with the bypass-inlet close to the MAF and with high boosts, you got the MAF threads ripped of.

            Audi UrS4 Avant 2.5 20vt - twincharged - Project
            Audi 80q B4 Sedan 2.2 20vt - Daily user
            BMW 320d Touring e91 M-Sport - Daily user
            BMW 740iA e38 - Project

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            • Jamo
              Retired OG Mod
              • Mar 2004
              • 21750
              • Country: United Kingdom

              #7
              The difference between the two means that it will occur on high boost applications no matter what agreed point 2 is the better location but in reality either place is the same in high boost apps

              Comment

              • newsh
                S2Forum Obsessed
                • Aug 2003
                • 16226
                • Country: United Kingdom

                #8
                Better to aim the DV return directly at the face of the turbo so it can do its job of keeping the turbo spinning. So pic 2 without doubt.

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                • DS2
                  S2Forum Fanatic
                  • Sep 2010
                  • 80
                  • Home: Jordan Current: Finland

                  #9
                  i would also say pic 2

                  Comment

                  • Billman
                    S2Forum Freak
                    • Nov 2004
                    • 4129

                    #10
                    number 2.......you get a chance to give the compressor impeller a little push also apart from keeping tha maf safe.
                    Go Holset or Go RS4

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