Announcement

Collapse
No announcement yet.

Boost control not working

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • Boost control not working

    At first many thanks on the creator of this mod.
    I have tested it and almost all is working nice.
    But i have problem with boost regulation.
    All the time i see only spring pressure and n75 dc is zero, target boost is only 150 kpa. In map is 270 kpa.
    Please, can somebody help me.

  • #2
    Originally posted by macof View Post
    At first many thanks on the creator of this mod.
    I have tested it and almost all is working nice.
    But i have problem with boost regulation.
    All the time i see only spring pressure and n75 dc is zero, target boost is only 150 kpa. In map is 270 kpa.
    Please, can somebody help me.
    A few options:
    1. You have problem with cam-crank synchronization (belt off by 1 tooth).
    2. You have mapswitching and boost failsafe patch enabled, but nothing connected to MFTS wire -> It is in safe mode. Remove the boost failsafe patch. 27C512 -> Patches -> MFTS input boost cut enabled -> Remove patch.
    3. Your car is conversion from automatic and not all wires are removed or TCU is still in car.
    4. You have some fault codes in ECU.
    http://tuner.ee - http://www.facebook.com/tuner.ee

    Comment


    • #3
      Originally posted by prj View Post

      A few options:
      1. You have problem with cam-crank synchronization (belt off by 1 tooth).
      2. You have mapswitching and boost failsafe patch enabled, but nothing connected to MFTS wire -> It is in safe mode. Remove the boost failsafe patch. 27C512 -> Patches -> MFTS input boost cut enabled -> Remove patch.
      3. Your car is conversion from automatic and not all wires are removed or TCU is still in car.
      4. You have some fault codes in ECU.
      Hi,
      have checked the timing belt, is 100% on the marks,
      have removed both patches from ECU,
      checked fault codes, there are only two: throttle body switch and engine speed signal,
      tryed the car with another moded ECU,
      car has swapped engine and loom, but from manual transmissin car.
      but still no boost and N75 request.
      what i m dooing wrong?

      Comment


      • #4
        Originally posted by macof

        Hi,
        have checked the timing belt, is 100% on the marks,
        have removed both patches from ECU,
        checked fault codes, there are only two: throttle body switch and engine speed signal,
        tryed the car with another moded ECU,
        car has swapped engine and loom, but from manual transmissin car.
        but still no boost and N75 request.
        what i m dooing wrong?
        It’s not a bad MFTS signal by chance? (sorry if you’ve already covered this, I have not read everything)

        S2 Coupe 3B Project


        Ur quattro restoration

        S2 Avant

        Boost is the new rock and roll!
        sigpic

        Comment


        • #5
          I have tried to unplug the MFTS, but with the same result

          Comment


          • #6
            Originally posted by macof
            I have tried to unplug the MFTS, but with the same result
            Are you getting the WOT signal from the TPS? Is the throttle opening fully?

            S2 Coupe 3B Project


            Ur quattro restoration

            S2 Avant

            Boost is the new rock and roll!
            sigpic

            Comment


            • #7
              Originally posted by newsh View Post

              Are you getting the WOT signal from the TPS? Is the throttle opening fully?
              TPS is showing from 7 to 99,8%

              Comment


              • #8
                I think anything over 95% is considered WOT from a conversation with Dimitri when he mapped my car.
                91 Modded 3B
                14 A6 Avant Black Edition

                Comment


                • #9
                  Have checked the wiring from MFTS and the pin46 in JPT55 ECU connector is missing (AAN harness).
                  But both patches are removed.
                  Can be this the problem?

                  Comment


                  • #10
                    Originally posted by macof View Post
                    Have checked the wiring from MFTS and the pin46 in JPT55 ECU connector is missing (AAN harness).
                    But both patches are removed.
                    Can be this the problem?
                    Please upload your current binaries here (fuel/boost) and I will have a look.
                    Last edited by prj; 9 January 2018, 16:33.
                    http://tuner.ee - http://www.facebook.com/tuner.ee

                    Comment


                    • #11
                      Thanks
                      Attached Files

                      Comment


                      • #12
                        I think the MFTS disable patch I made does not quite disable it. Need to look.
                        http://tuner.ee - http://www.facebook.com/tuner.ee

                        Comment


                        • #13
                          OK, re-enable the boost cut patch in tunerpro, then save the binary.
                          After that open with hex editor and at address 0x711C you have 50 09, replace it with with 00 00.

                          Then let me know if you have boost control please. And actually if you don't have anything connected to MFTS wire, just enabling the boost cut patch could also solve your problem.
                          If it doesn't the problem is probably somewhere else.
                          http://tuner.ee - http://www.facebook.com/tuner.ee

                          Comment


                          • #14
                            Originally posted by prj View Post
                            I think the MFTS disable patch I made does not quite disable it. Need to look.
                            Have tried, but still not working.

                            Comment


                            • #15
                              Originally posted by prj View Post
                              OK, re-enable the boost cut patch in tunerpro, then save the binary.
                              After that open with hex editor and at address 0x711C you have 50 09, replace it with with 00 00.

                              Then let me know if you have boost control please. And actually if you don't have anything connected to MFTS wire, just enabling the boost cut patch could also solve your problem.
                              If it doesn't the problem is probably somewhere else.
                              Sorry, have not read the second reply, IT WORK NOW!!!
                              THANKX!!!!!!

                              Comment

                              Working...
                              X