Pressurised MAFs

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  • sorens2
    S2Forum Addict
    • Feb 2004
    • 241
    • Country: Denmark

    #16
    I might have a used HKS on hand
    Audi RS4 LO550

    BTG 8:08

    www.fredslunds.dk

    Comment

    • sorens2
      S2Forum Addict
      • Feb 2004
      • 241
      • Country: Denmark

      #17
      This is how mine is placed
      Attached Files
      Audi RS4 LO550

      BTG 8:08

      www.fredslunds.dk

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      • Mihnea
        S2Forum Extremist
        • Jul 2003
        • 1288
        • Home: Belgium Current: United Kingdom

        #18
        Doug,

        The ECU heats up the wire in the MAF 100 degree C above the inner MAF temperature (it's got a sensor for that) and then measures the current it has to run through the wire to keep it at that temperature when air goes through it. more air mass, more current needed to keep the wire at the same temp, voila, this is how it measures air mass.


        So having 20 degree C above ambient temps through the MAF is going to be no big problem, the wire is gonna be a little hotter but that's it...


        Cheers,


        Mihnea
        '98 Silver Grey 2.7T S4, dual 2.75" turbo back exhaust with no cats, FMIC, BIG injectors, 10 Bar motorsport fuel pump, modded RS4 turbos, tubular exhaust manifolds, custom intakes, RS4 MAF, Bilstein PSS9, H&R ARBs, 19" BBS CH, custom remap, 511 BHP/505ft-lbs

        www.MRCTuning.com
        info@MRCTuning.com
        Workshop Directions

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

          #19
          I have fitted my MAF in the boost pipe. Car runs fine, it even feels better throttle response, the car picks up very quickly. The car is feeling better than ever. It feels so fast, the power is just insane. I need to not drive it every day as thats what makes me crave for more power
          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

          Comment

          • porkkis
            S2Forum Extremist
            • Aug 2003
            • 1994
            • Country: Finland

            #20
            No breather oil problems at all? I imagine the wire gets contaminated by the breather oil easily this way.
            -

            Comment

            • Lee
              S2Forum Extremist
              • Jul 2003
              • 1512
              • Country: United Kingdom

              #21
              Got any pics Tom? I was curious to see where your MAF and dump valve ended up.
              1995 S2 Avant with some upgrades

              Designun Limited....
              Aerospace, Space and Motorsport Design Consultancy and hardware supply.

              Comment

              • 4WheelDrifter
                S2Forum Zealot
                • Oct 2004
                • 5773
                • Country: Devon

                #22
                A short TB to MAF will improve throttle response, that's for sure.
                Glad it's working out.
                Dump valve could even be a dump to air before the MAF.
                SS

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

                  #23
                  Yeah i will use my old bailey dump to air DV. It fits ok, will post pics once i have i taken some. cheers lee for the hoses. didnt xpect them untill tomorrow. nice work.
                  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

                  Comment

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

                    #24
                    The long awaited pictures
                    Attached Files
                    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

                    Comment

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

                      #25
                      and
                      Attached Files
                      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

                      Comment

                      • 4WheelDrifter
                        S2Forum Zealot
                        • Oct 2004
                        • 5773
                        • Country: Devon

                        #26
                        Nice one.
                        I think i'd be tempted to put some sort of stone protection in front of the MAF.
                        SS

                        Comment

                        • Greg_S
                          Administrator
                          • Jul 2003
                          • 12431
                          • Country: United Kingdom

                          #27
                          I was just thinking the exact same thing, its a bit vulnerable there.

                          Greg
                          Greg

                          S2Forum.com Administrator & Webmaster

                          '93 Coupe with a few tweeks

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

                            #28
                            It has the grill covering it when bonnet shut, no more vunerable than the IC?
                            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

                            Comment

                            • RIX
                              S2Forum Addict
                              • Jul 2004
                              • 229
                              • Country: Denmark

                              #29
                              why 4wheeldrifter the front grill should be enough.
                              looks great audimann

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                              • 4WheelDrifter
                                S2Forum Zealot
                                • Oct 2004
                                • 5773
                                • Country: Devon

                                #30
                                I'm just thinking about the state of my front rad. I don't want Tom's MAF to suffer the same.
                                SS

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