HELP NEEDED please URs4 lacking power

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  • george929
    S2Forum Hobbyist
    • Feb 2016
    • 15
    • Country: United Kingdom

    #1

    HELP NEEDED please URs4 lacking power

    Advise needed please!!

    There is something wrong with my s4 !! Its lacking power and holding back. you can see in the video its slow ! its struggling to build boost peak is about 1.7bar. but then its dropping of towards the top of the rev range down too 1.bar . it also cuts the power for about half a second violently shaking the car which is a nightmare if you pulling out of a corner. tend to get snap over steer.. also if its holding back when you give it WOT it occasionally sends a naughty flame out the back with a large bang... ive had it 4 months and previously it was fast ! now its gold gtd fast
    its basicly Rs2 spec turbo/injectors/ map/fuel pump.. there nothing obvious. no vac leaks or boost leaks. its just starting to get really annoying.
  • george929
    S2Forum Hobbyist
    • Feb 2016
    • 15
    • Country: United Kingdom

    #2

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    • UrS4boy
      S2Forum Obsessed
      • Feb 2006
      • 11859
      • Country: Canada

      #3
      Video link doesn't work.
      RS2'd 93 UrS4 5 spd sedan
      94 UrS4 V8 6 spd manual avant

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      • imp998
        S2Forum Addict
        • Nov 2013
        • 207
        • Country: United Kingdom

        #4
        Urs6 avant nogaro
        s2 avant

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