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    DERESTRICTING GUIDE

    Derestricting
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    • NINJA
      NINJA last edited by NINJA

      Hi All -

      Just thought I start a thread with a guide on 'how to' derestrict your DTR/X. Here's a very good guide to start with, you may find it easier swapping the full exhaust with a DEP, Giannelli or similar instead of cuting up the front pipe. If you have any other tips or links then please chime in. 😉

      https://www.slideshare.net/kerryprinceuk/derestricting-the-yamaha-dt125-r-1988-through-to-2007-scrimsmustangs-classic-yamaha-restorations

      https://www.youtube.com/watch?v=ILwFDQ8ew24

      SEDUCED BY THE DARK SIDE!!!

      1 Reply Last reply Reply Quote 0
      • Calum
        Calum last edited by Calum

        The RE/X has got to be by far the easiest to derestrict.

        Earth Green/Black Wire, new pipe. It's like Yamaha knew we were going to get full power haha!

        They were also packed with only 3MB heads and all the boost bottles.

        Probably still the slowest nevertheless lol.

        Always Originate, Never Pirate!

        NINJA 1 Reply Last reply Reply Quote 1
        • Darty
          Darty last edited by Darty

          Available from Fowlers.

          Yamaha DT230 Lanza Airbox duct. Really nice upgrade, much larger duct for more air intake. Jet slightly richer towards 3/4 Full throttle and this Duct will work very well.

          A little material has to come away to seat it's larger flange, so be sure, and commit to jetting if needed.

          Better sound there too.
          DUCT
          4TP-14437-00

          https://c1.staticflickr.com/8/7546/29448640661_45bd65b4f9_c.jpg

          https://c1.staticflickr.com/9/8148/29448617261_8296a8c346_c.jpg

          Airbox Tract. 1988-98'

          3MB-14453-00
          The later Airboot YIES bottle was introduced for better low RPM induction and emissions. It works really well for the Midrange, but makes the bike a little flat on top.

          For Top end, I use the older Airboot without YIES. It works better for higher RPM.

          http://thumbs.picclick.com/00/s/MTAwMFg3NDY=/z/0OUAAOSwGIRXZ~WU/$/Yamaha-DT125-R-DTR125-AIRBOX-RUBBER-_1.jpg

          Keep it real

          1 Reply Last reply Reply Quote 2
          • Irongamer727
            Irongamer727 last edited by

            What does the black/green wire do?

            declan 1 Reply Last reply Reply Quote 0
            • declan
              declan @Irongamer727 last edited by

              @irongamer727 it removes the restricted rev limiter on the bike

              C 1 Reply Last reply Reply Quote 0
              • NINJA
                NINJA @Calum last edited by

                @Calum I think this thread needs to be pinned, as it has a lot of useful info and tips.

                SEDUCED BY THE DARK SIDE!!!

                Calum 1 Reply Last reply Reply Quote 0
                • Calum
                  Calum @NINJA last edited by

                  @NINJA There are only 7 threads in this section loi. Pinned anyway.

                  Always Originate, Never Pirate!

                  NINJA 1 Reply Last reply Reply Quote 0
                  • NINJA
                    NINJA @Calum last edited by

                    @Calum True but sadly people do not use the search bar, or look around various sections before posting. 😉

                    SEDUCED BY THE DARK SIDE!!!

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                    • C
                      connorjordan185 @declan last edited by

                      @declan is it green and black nomatter what year or model?

                      Calum 1 Reply Last reply Reply Quote 0
                      • Calum
                        Calum @connorjordan185 last edited by

                        @connorjordan185 No! Have you even read @NINJA's link?

                        alt text

                        I quote

                        "DTRE AND DT125X 2004 ONWARD!"
                        AKA not previous.

                        Always Originate, Never Pirate!

                        C 1 Reply Last reply Reply Quote 1
                        • C
                          connorjordan185 @Calum last edited by

                          @Calum I have yes, all I need to know is how to electronicly de-restrict my 2002 plate dt125r it's doesn't quite say on there, my bike has about 6 wires coming from the back of the speedo

                          NINJA Calum 2 Replies Last reply Reply Quote 0
                          • NINJA
                            NINJA @connorjordan185 last edited by

                            @connorjordan185 Watch the video dude, it shows it all!!! 😉

                            SEDUCED BY THE DARK SIDE!!!

                            C 1 Reply Last reply Reply Quote 0
                            • C
                              connorjordan185 @NINJA last edited by

                              @NINJA what video? I have tried a few on YouTube. I

                              NINJA 1 Reply Last reply Reply Quote 0
                              • Calum
                                Calum @connorjordan185 last edited by

                                @connorjordan185 Then you don't have the green and black wire, since that's for 04 onwards. Yours will be the reed switch, exhaust and CDI.

                                Always Originate, Never Pirate!

                                C 1 Reply Last reply Reply Quote 0
                                • NINJA
                                  NINJA @connorjordan185 last edited by

                                  @connorjordan185 The link is in my first post.

                                  SEDUCED BY THE DARK SIDE!!!

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                                  • C
                                    connorjordan185 @NINJA last edited by

                                    @NINJA thanks mate, I have had the bike in bits once again, I've been through the wiring the lot and as far as I can tell it all looks good, the little white block thing is popped out and wrapped up but still tucked inside the speedo unit, so this is leading me to think the fault lies elsewhere

                                    1 Reply Last reply Reply Quote 1
                                    • C
                                      connorjordan185 @Calum last edited by

                                      @Calum is the reed switch the little white block inside the speedo clocks? If so that's wrapped up inside the speedo unit, my bike has a full dep pipe. But you mentioned cdi unit, do you think this could be my problem?

                                      NINJA 1 Reply Last reply Reply Quote 0
                                      • NINJA
                                        NINJA @connorjordan185 last edited by

                                        @connorjordan185 Yes that's it. :thumbs_up_medium-light_skin_tone:

                                        SEDUCED BY THE DARK SIDE!!!

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                                        • C
                                          connorjordan185 @NINJA last edited by

                                          @NINJA what do you mean mate? The cdi is my problem?

                                          NINJA 1 Reply Last reply Reply Quote 0
                                          • NINJA
                                            NINJA @connorjordan185 last edited by

                                            @connorjordan185 The white block is the reed block, which you have found. The CDI may be the problem as the later models have a built in rev limiter. Read the guide aka the paragraph which starts "The manin restriction", then check which CDI you have? Better yet take and post a pic for us all to see.

                                            SEDUCED BY THE DARK SIDE!!!

                                            C 1 Reply Last reply Reply Quote 0
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