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DYI Swap AT to DCT. Yes it possible

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  • DYI Swap AT to DCT. Yes it possible

    Dedicated steps to swap AT on DCT

    Part1 ( Hardware parts )

    -12 51 7 581 112 – wiring
    -83 22 2 147 477 - DCT Oil 8l.
    -51 16 9 141 518 - Cover center console
    -61 31 9 133 067 and 61 31 9 213 647 - gear selector
    -61 31 9 192 483 - park system for DCT
    -DCT Transmission ( from E9X/E89 n54 n55 )
    -DCT flywheel. Very important.
    -If you have 2009.01+ car you number is - 21 20 7 590 853 ( 6 bolts 11 22 7 520 706 )
    -If you have 2009.01 < car you number is - 21 20 7 593 469 ( 8 bolts 11 22 7 520 706 )
    The different about flywheel only in bolts pattern.
    -Rear differential 2.56

    Part2 ( ECU parts ) ( If you have 2008/09> just skip this part )

    MSD81 ECU (12 14 7 616 431 ) - if you have 2008/03 just skip this part
    DSC Pump (34 51 6 789 308 or 34 51 6 863 356 ) - if you have 2008/09 just skip this part
    DSC Sensor (34 52 6 780 334 or 34 52 6 850 375 ) - if you have 2008/09 just skip this part
    DSC Sensor plug (http://www.realoem.com/bmw/showparts...95&hg=34&fg=20 ) - if you have 2008/09 just skip this part
    I can’t find this part #17 . But I buy used harness from car 2009+ and get this plug from it.
    JBE2 or JBE3 ECU (61359286790 ) - if you have 2007/09 just skip this part
    DCT shift paddles or m3 shift paddles

    Part3 (harness to DCT Gear Selector )
    You should to made the wiring harness for DCT gear selector switch.
    Use this link to download scheme. ftp://share:[email protected]/DCT/
    You should to made and integrate the harness, marked blue color in my scheme
    To do this you need following parts:
    4 pin jack plug 61 13 8 380 696
    2 pin jack plug 61 13 6 925 634
    and also 6 pins 61 13 0 005 197 - 6
    Also you need 10 pins jack plug. Unfortunately you can't buy it, but you can do it yourself. You should to buy a generic 10-pin connector with a spacing of 2.5 mm ( like this http://www.kosmodrom.com.ua/pic/HU-13.jpg )



    Part4 ( Replacing JBE ECU ) ( if you have 2007/09 > skip this part )
    You can find JBE ECU under the feet of the passenger seat.
    First you should replace it on new one JBE2 or JBE3 ECU (61359286790 ).
    After this you should integrate D-can bus line for new ECU. ( Old cars have K-line and new ECU will not work )
    Change pin on OBD2 socket
    7 to 14
    and put the additional wire between OBD2 socket pin 6 and JBE ( blue connector ) pin 17


    Part5 ( Replacing DSC ECU ) ( if you have 2008/09 > skip this part )
    Replace DSC unit on new one.
    Replace DSC sensor on new one. ( You can find DSC sensor under drive seat, under carpet )

    Replace DSC Sensor Plug. The DSC sensor should be connect to DSC unit follows
    DSC UNIT > DSC Sensor
    39 > 4
    27 > 2
    11 > 3
    28 > 1
    After this you should calibrate your DSC unit and sensors. ( use bmw ISTA to do this ),

    Part4 ( Replacing MSD80 on MSD 81 ) ( if you have 2008/03 > just program it )
    Replace you MSD80 on 81.
    Very important! you can't use used MSD81 unit. you should buy it new
    Program it on Zub 7628524
    Do not forget to transfer values about injectors in the new MSD81.

    Part6 Programming and Coding
    I use NCS Expert and Win KFP to program and code my car
    Remove FA $205
    Remove value that starts # and Add #0909
    Add FA $2TC
    Make FA write on CAS and NFRM
    Code ECU: MSD81/CAS/Kombi/IHK/JBFE/NFRM/GWS
    Program MSD81 on Zub 7628524
    Program GS40 on Zub 7600042
    Update you Kombi/NFRM/GWS
    Last edited by ncat10; 01-09-2015, 07:17 AM.
    335I | ST PTE6266GEN2 FFTEC | DCT flashed by XHP Stage3 and upgraded Dodson SSP clutch + Oil pan| X2 oil coolers | tranny cooler | B16 ride control | JB4 + MHD Bef (tuned by Trebilla) | LB Performance | WMI | QUAIFE LSD | Carbon-Ceramic brakes | Akrapovic SlipOn Titanium | Reduced weight flywheel | Synapse BOV | AMS Intercooler | Walbro LPF |

  • #2
    How much for the parts on Tischer O_O (oh gawd I don't wanna know). Probably better to just buy a wrecked DCT donor car.

    Oh well it's probably better than a costly custom transmission rebuild!
    Last edited by coolbho3k; 10-29-2013, 06:31 AM.
    2007 E90 335xi 6AT Premium Pkg | JB4 G5 ISO | Cheap custom exhaust: OBX ********* ***, Secondary *** Delete w/ Magnaflow Xpipe | *****Performance Backend Flash ("PUMP") | DCI | BMS Cowl Filters | Alpina TCU Software | M3 flappy paddles retrofit | NGK "one step colder" Soon: custom oil cooler retrofit, VRSF 7" FMIC

    Comment


    • #3
      One of the best posts in here. Sadly its gone un noticed.

      Comment


      • #4
        Originally posted by klipseracer View Post
        One of the best posts in here. Sadly its gone un noticed.
        +1... very informative, I'd like to see more people try
        2007 E90 335xi 6AT Premium Pkg | JB4 G5 ISO | Cheap custom exhaust: OBX ********* ***, Secondary *** Delete w/ Magnaflow Xpipe | *****Performance Backend Flash ("PUMP") | DCI | BMS Cowl Filters | Alpina TCU Software | M3 flappy paddles retrofit | NGK "one step colder" Soon: custom oil cooler retrofit, VRSF 7" FMIC

        Comment


        • #5
          @klipseracer, @coolbho3k - Thank's
          335I | ST PTE6266GEN2 FFTEC | DCT flashed by XHP Stage3 and upgraded Dodson SSP clutch + Oil pan| X2 oil coolers | tranny cooler | B16 ride control | JB4 + MHD Bef (tuned by Trebilla) | LB Performance | WMI | QUAIFE LSD | Carbon-Ceramic brakes | Akrapovic SlipOn Titanium | Reduced weight flywheel | Synapse BOV | AMS Intercooler | Walbro LPF |

          Comment


          • #6
            This is awesome, but must cost a fortune between buying the DCT and having to buy a different ECU.
            335i Coupe: E85 BB flash, JB4 G5 ISO (map 7), DCI and 60% E85 blend: 11.7 @ 120 mph.

            Former Best with JB4 (G4, map 5) DCI and 40% E85 blend: 2009 BMW 335i Coupe: 12.173 @ 109.490 MPH

            Comment


            • #7
              Originally posted by GetSomeE92 View Post
              This is awesome, but must cost a fortune between buying the DCT and having to buy a different ECU.
              Yeah. Again, is I'm assuming it's probably a lot more economical to try to find a wrecked car with DCT? Does anyone know if the N55 DCT part is the same DCT as the 335is? Did any N54 equipped 135i come with DCT? Cause the 335is is a RARE car.
              2007 E90 335xi 6AT Premium Pkg | JB4 G5 ISO | Cheap custom exhaust: OBX ********* ***, Secondary *** Delete w/ Magnaflow Xpipe | *****Performance Backend Flash ("PUMP") | DCI | BMS Cowl Filters | Alpina TCU Software | M3 flappy paddles retrofit | NGK "one step colder" Soon: custom oil cooler retrofit, VRSF 7" FMIC

              Comment


              • #8
                Originally posted by coolbho3k View Post
                Yeah. Again, is I'm assuming it's probably a lot more economical to try to find a wrecked car with DCT? Does anyone know if the N55 DCT part is the same DCT as the 335is? Did any N54 equipped 135i come with DCT? Cause the 335is is a RARE car.
                You can use parts from N54/N55 E90/E82/E83. All they have same DCT trans, flywheel and rear differential. Also you can use DCT trans and flywheel form Z4 E89.
                335I | ST PTE6266GEN2 FFTEC | DCT flashed by XHP Stage3 and upgraded Dodson SSP clutch + Oil pan| X2 oil coolers | tranny cooler | B16 ride control | JB4 + MHD Bef (tuned by Trebilla) | LB Performance | WMI | QUAIFE LSD | Carbon-Ceramic brakes | Akrapovic SlipOn Titanium | Reduced weight flywheel | Synapse BOV | AMS Intercooler | Walbro LPF |

                Comment


                • #9
                  I would love to do this, well done sir! How much did all the parts including the DCT trany run you? I am assuming you did the swap yourself?

                  Comment


                  • #10
                    Originally posted by Jeremy View Post
                    I would love to do this, well done sir! How much did all the parts including the DCT trany run you? I am assuming you did the swap yourself?
                    Hello!
                    DCT Tranny - 2100$
                    Rear Diff - 400$
                    Flywheel - 1050$
                    MSD81 - 1050$
                    JBFE3 - 300$
                    DSC Unit + sensor - 400$
                    All other parts 1000-1300$
                    335I | ST PTE6266GEN2 FFTEC | DCT flashed by XHP Stage3 and upgraded Dodson SSP clutch + Oil pan| X2 oil coolers | tranny cooler | B16 ride control | JB4 + MHD Bef (tuned by Trebilla) | LB Performance | WMI | QUAIFE LSD | Carbon-Ceramic brakes | Akrapovic SlipOn Titanium | Reduced weight flywheel | Synapse BOV | AMS Intercooler | Walbro LPF |

                    Comment


                    • #11
                      That's awesome!

                      Comment


                      • #12
                        DCT Conversion

                        I came across this thread which covers doing an automatic to DCT conversion, I have an o6 M6 with SMG and I would like explore converting it to a DCT gearbox. The person who covered this conversion seems to be quite knowledgeable and I would like ask some questions around the DCT Drive logic harness and making the custom plug for the DCT shifter.

                        Comment


                        • #13
                          To people who say DCT trannies cost much, I can get one for 800 bucks lols :D

                          Comment


                          • #14
                            Ill take one for $800

                            Comment


                            • #15
                              Anyone tried to do the same on XI models ?
                              2008 335XI(E92) AT/ garrett gtx3582r with jpworks manifold 1.06AR housing/ tial mv-s 38mm wgs(13.5 psi springs)/ tial bov/ fuel it level1 upgrade/ index 12 injectors/ N20 Map sensor/JB4 ST TS BEF with MHD/ Alpina Flash for now.

                              Comment


                              • #16
                                Has any one done this? I am
                                Looking to go this route.

                                Comment


                                • #17
                                  LOL, the OP has done this.

                                  Comment


                                  • #18
                                    can you have a DCT tranny in a xDrive ?

                                    Comment


                                    • #19
                                      Yea I wanna do this on an X-drive model but I would imagine you would possibly need to make custom sized axles and drive shafts?

                                      Comment


                                      • #20
                                        Actually I think the it should be the same

                                        Comment


                                        • #21
                                          why is an MSD81 needed? I have seen MSD80 with DCT swap, but not sure how it was done.

                                          Comment


                                          • #22
                                            Can we clarify what is needed exactly for an 08 or 09 model with Steptronic/AT?
                                            Project Succubus - 2015 Estoril Blue M235i F23
                                            Sponsors: SoloWerks, Extreme PowerHouse, and AEM Intake Systems

                                            Comment


                                            • #23
                                              I wonder is this could be swapped into the 335D with the ZF6HP26. Is the 335is ZF6HP21 physically the same on the outside will it bolt up?

                                              Comment


                                              • #24
                                                Originally posted by TwistedX View Post
                                                Can we clarify what is needed exactly for an 08 or 09 model with Steptronic/AT?
                                                TwistedX did you get any more info on this anywhere else. I have a 2009 Touring 335i and have got a DCT gearbox with flywheel from a wrecked 2011 335i coupe. But my mechanic has not done this particular swap before so we need clarification on some points.

                                                Also is there another copy of the wiring diagram around I'm not sure if there is one at that link posted.

                                                Has anyone out there done this or is this an urban legend.........

                                                Comment


                                                • #25
                                                  Bump. Plan on building a E90 track car with DCT

                                                  Comment


                                                  • #26
                                                    I see this is a pretty old thread.
                                                    If the OP is still alive. ..if I brought my 2006 m5 smg to you with the dct installed...how much wod you charge me to get the electronics hppy and working? I am really not interested in figuring out all of this wiring g etc. Call me lazy if you like. I don't mind installing the tranny and getting any necessary adapters made and installed.
                                                    I set up an account here so that I could ask this question.
                                                    Thanks

                                                    Comment


                                                    • #27
                                                      Any updates if someone tried to do the same on other models?

                                                      Comment


                                                      • #28
                                                        Originally posted by Nee54 View Post
                                                        Any updates if someone tried to do the same on other models?
                                                        What other models?

                                                        Comment


                                                        • #29
                                                          Would this work on an e60 n54?
                                                          2010 bmw 535i JB4 e85 hydrid backend, pure stage 2 hi flow, bms meth kit, stage 2 fuel pump, Vrsf inlets, vrsf castles, vrsf charge pipe, and vrsf 7.5 race intercooler

                                                          Comment


                                                          • #30
                                                            I'm about to replace the 6AT in my 2010 E91 with a DCT. Since my car is fairly recent most parts of this tutorial are not required for my car.

                                                            Sadly I do still need the diagram for the harness that needs to be made. This does not seem available via the FTP link provided.

                                                            So, is there anyone who can help me out with this?

                                                            Cheers!
                                                            Richard
                                                            2010 E91 335i - Le Mans blue
                                                            Intercooler upgrade, exhaust upgrade, chargepipe upgrade, Stage 1 LPFP, N20 TMAP.
                                                            JB4 Map 7 - MHD Back-end Flash RACE.

                                                            About as fast as you can go without having to eat airlinerfood.

                                                            Comment


                                                            • #31
                                                              Originally posted by RichardHoman View Post
                                                              I'm about to replace the 6AT in my 2010 E91 with a DCT. Since my car is fairly recent most parts of this tutorial are not required for my car.

                                                              Sadly I do still need the diagram for the harness that needs to be made. This does not seem available via the FTP link provided.

                                                              So, is there anyone who can help me out with this?

                                                              Cheers!
                                                              Richard
                                                              Have you looked over on spool street? Most of the info is relevant. I'll see if I can find my notes from when I did mine. Which is a 2010 e90 so wiring should be really close. Do you have all the parts needed already? Feel free to pm me. It may be a few days before I can get the info for you.
                                                              JB4, PT5858 ST, 3.5" exhaust, VMR V710, KW V3 coilovers, Wavetrac LSD, AKG subframe and diff bushings- Hybrid Ovations, Jehnert Doorboards, IDMax15 and 2 Arc Audio 1200.6 amps, white gauge cluster

                                                              Comment


                                                              • #32
                                                                Got a a/t dme/ cas/ ignition key switch/ key fob for my m/t 335i, is everything plug n play or do I have to code them to my vehicle

                                                                Comment


                                                                • #33
                                                                  Hello to all. can I use DCT transmission from M4? I have DCT transmission from M4 and M4 flywheel? anyone has experience?
                                                                  BR Alex

                                                                  Comment


                                                                  • #34
                                                                    Originally posted by ncat10 View Post
                                                                    Dedicated steps to swap AT on DCT

                                                                    Replace DSC Sensor Plug. The DSC sensor should be connect to DSC unit follows
                                                                    DSC UNIT > DSC Sensor
                                                                    39 > 4
                                                                    27 > 2
                                                                    11 > 3
                                                                    28 > 1
                                                                    A little of correction. The F-Can goes to 11 and 26, not 11 and 28. And the pin numbers of the sensor are 3,5,2,1 of the sensor (instead of 4,2,3,1). Final mapping would look this way:

                                                                    39 -> 3
                                                                    27 -> 5
                                                                    11 -> 2
                                                                    26 -> 1


                                                                    Click image for larger version

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                                                                    Also, it wasn't easy to realize that "OLD X6031" is in fact the BODY side that needs to get pins swapped to X6021 (body side again).

                                                                    Other than that - its flawless. Many thanks for the writeup.
                                                                    ------------------------------------------------------------
                                                                    2007 335i MT N54
                                                                    MHD+JB4 Garret GTW3684 ST
                                                                    FMIC, DP, 3" PIPES, Fuel-It Stage 1, MF LSD.
                                                                    ------------------------------------------------------------

                                                                    Comment


                                                                    • #35
                                                                      Originally posted by imad777 View Post
                                                                      A little of correction. The F-Can goes to 11 and 26, not 11 and 28. And the pin numbers of the sensor are 3,5,2,1 of the sensor (instead of 4,2,3,1). Final mapping would look this way:

                                                                      39 -> 3
                                                                      27 -> 5
                                                                      11 -> 2
                                                                      26 -> 1


                                                                      [ATTACH]90539[/ATTACH]
                                                                      Also, it wasn't easy to realize that "OLD X6031" is in fact the BODY side that needs to get pins swapped to X6021 (body side again).

                                                                      Other than that - its flawless. Many thanks for the writeup.
                                                                      Which year was your car?

                                                                      Comment


                                                                      • #36
                                                                        Originally posted by klipseracer View Post
                                                                        Which year was your car?
                                                                        Mine (body) is 2007/4 but in fact it doesn't matter, the DSC sensor's wiring sits as follows on every RWD model with dsc_85 & dsc_87:

                                                                        39 (CLUS SP, wires to sensor pin #3)
                                                                        27 (CLUS GND, wires to sensor pin #5)
                                                                        11 (F Can High, wires to sensor pin #2)
                                                                        26 (F Can High, wires to sensor pin #1)

                                                                        Here: A65a Dynamic stability control (DSC)

                                                                        Guess 28 was just a typo in the original post, as it's not wired in any modification except AWD models (wheel ABS/DSC), and 26 is the pin for FCAN H signal needed for the sensor

                                                                        PS: AWD models have different DSC and totally different pinout to the sensor.
                                                                        Last edited by imad777; 10-16-2019, 01:05 AM.
                                                                        ------------------------------------------------------------
                                                                        2007 335i MT N54
                                                                        MHD+JB4 Garret GTW3684 ST
                                                                        FMIC, DP, 3" PIPES, Fuel-It Stage 1, MF LSD.
                                                                        ------------------------------------------------------------

                                                                        Comment


                                                                        • #37
                                                                          One of the more interesting threads...
                                                                          @e82n54 -- [email protected] -- stock turbos, stock exhaust, stock suspension

                                                                          Comment


                                                                          • #38
                                                                            Originally posted by imad777 View Post
                                                                            Mine (body) is 2007/4 but in fact it doesn't matter, the DSC sensor's wiring sits as follows on every RWD model with dsc_85 & dsc_87:

                                                                            39 (CLUS SP, wires to sensor pin #3)
                                                                            27 (CLUS GND, wires to sensor pin #5)
                                                                            11 (F Can High, wires to sensor pin #2)
                                                                            26 (F Can High, wires to sensor pin #1)

                                                                            Here: A65a Dynamic stability control (DSC)

                                                                            Guess 28 was just a typo in the original post, as it's not wired in any modification except AWD models (wheel ABS/DSC), and 26 is the pin for FCAN H signal needed for the sensor


                                                                            PS: AWD models have different DSC and totally different pinout to the sensor.
                                                                            Hey, Why are you talking about pin 5 when the new dsc pump connector is a 4 pin connector?

                                                                            Thanks
                                                                            -07 335i coupe
                                                                            BMS charge pipe
                                                                            Turbosmart BOV
                                                                            VRSF down pipe
                                                                            BMS WMI with single nozzle ( 10 )
                                                                            JB4 map 3 w/bluetooth & antiliag
                                                                            Afe intake filter
                                                                            BMS intercooler
                                                                            BMS tranny cooler
                                                                            BMS Double baffle catch can
                                                                            MHD BEF Racegas
                                                                            Precision Raceworks Coil
                                                                            -Running 91 octane with WMI

                                                                            Comment


                                                                            • #39
                                                                              one mo

                                                                              https://epmmtractor.com/2021/05/12/o...lackjack-solo/

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                                                                              • #40
                                                                                Your website is really cool and perfect. I am researching and always following your articles. Thank you for sharing this article.

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