MAF on pressure side?

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  • audiman
    S2Forum Freak
    • Jul 2003
    • 4827
    • Country: United Kingdom

    #16
    Well i did change ex. manifold at the same time. So maybe my experience was due to that. But the car was fine at WOT, just part throttle.
    sigpic
    Tom C - www.rcmr.co.uk
    Audi UR Quattro
    Audi 100 C3 2.0 5 cyl 115ps
    Audi S2 - 07k engine project aiming for 800ps
    Audi B5 RS4 645ps 911nm

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    • QuattroFever
      S2Forum Extremist
      • May 2006
      • 1360
      • Country: United Kingdom

      #17
      Thinking of doing this real soon.

      Anyone had further experience in this??

      does pressure not affect the readings? it is after all a hot wire sensor which is dependant on flow over the wire to cool it pressure means more air mass but less flow?

      surely the ecu will see pig rich lambda and adjust accordingly?
      Leaving the maf only useful at off boost conditions?
      Volcano ABY coupe

      Ant

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      • A80Avant
        S2Forum Obsessed
        • Sep 2005
        • 10873
        • Country: Greece

        #18
        needs remap after this procedure

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        • QuattroFever
          S2Forum Extremist
          • May 2006
          • 1360
          • Country: United Kingdom

          #19
          oops...kinda explains what I asked @ 91 s2

          does the ECU measure WGFV duty cyle. As in, does it watch how many cycles it giving the wastegate for a particular RPM and if it steps outside of that part of the map then goes into some sort of safety cut?

          seems pretty dangerous to have a turbo system that doesn't know when to quit spooling your turbo because it can't measure flow over boost and eventually over speeding the turbo?
          Volcano ABY coupe

          Ant

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