How To Boost Leak Test 3b S2

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  • Barber
    Banned
    • Apr 2009
    • 208
    • Country: England

    #1

    How To Boost Leak Test 3b S2

    I've just got round to boost testing the S2 and I've got three bungs but dont know where they go? the blowy up bit goes where the airbox should but what about the other two? I'm sure I read that air starts to come out of the wastegate aswell? can somebody explain or show me a pic? cheers!
  • s2_bo
    S2Forum Zealot
    • Oct 2005
    • 6067
    • Home: United Kingdom Current: France

    #2
    The end with the valve goes where the MAF normally sits. The big bung goes where the IC - Boost pipe hose connects to the boost pipe, and the small bung goes where the breather pipe connects in the MAF hose.

    Also worth bunging the hose that goes from the wastegate frequency valve to the wastegate.
    91 S2 coupé - RIP
    98 S8 - Luxury barge

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    • AndyP
      S2Forum Zealot
      • Feb 2004
      • 6049
      • Country: England

      #3
      Instructions with pics are here:-

      sigpic
      1991 Audi S2 3B - 2.5 Stroker engine
      1997 A6 2.5TDi quattro avant - C4
      1976 RD250E / 350LC cafe racer

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      • Barber
        Banned
        • Apr 2009
        • 208
        • Country: England

        #4
        cheers boys!!!

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