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Thread: So WHAT IF..... Sport Shift in a 1999 GT

  1. #61
    SLi Lurker camroncamera's Avatar
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    It has been suggested to me to do a whole Baja Turbo swap; Engine, Turbo, Sport Shift 4EAT and all.

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    I don't think it was ever clearly answered in this thread, but to answer conclusively... the Sport Shift feature on Baja and 3rd-gen Legacy is exclusive to specific 4EAT Phase 2, Version 1 transmission assemblies with a special Sport Shift solenoid. It might be possible to add this solenoid and the harness to connect it to the valve body, or replace the valve body altogether with one from a Sport Shift enabled 4EAT:
    https://forums.nasioc.com/forums/sho...0#post44777410
    Quote Originally Posted by 4eat05
    While looking for 4eat info trying to see which cars had 4eat phase 2 version 1 and which had phase 2 version 2, I came across some diagrams showing the difference in valvebodies. Some phase2 version 1 diagrams showed and extra (SPORT shift) solenoid that the non sportshift valvebody did not have, but looked like tgere is a spot for the missing solenoid.

    Seems you MIGHT be able to add the SPORTshift solenoid to your valvebody then change trans internal harness w extra plug for solenoid and phase2ver1 ss tcu. Or use phase2 ver1 sportshift valvebody/harness and corresponding tcu. Plus of course ss shiftee. Idk if it will work w.o steering wheel buttons hooked up or gear indicator display not hooked up.

    But it seems you should be able to convert phase2ver1 non sportshift to sportshiftusing correct phase2 versiin1 4eat sportshift parts. Def can not use phase2vrrs2 stuff unless car originally had phase2version2 4eat.

    Google image 4eat phase ii version I and look for diagrams of valvebody. Most show where sportshift solenoid can go and empty space on non spirtshift valvebidy
    2003-2006 Subaru Baja Turbo and 2003-2004 Subaru Legacy GT Sport Shift 4EAT Automatic Transmission Codes:

    TV1B4YCEAB Part Number: 31000AF030 Subaru Legacy GT 2.5L Subaru Baja 2.5L TURBO S/S 4WD T 2003
    http://parts.subaru.com/p/AUTOMATIC-...1000AF030.html

    TV1B4MHFAA Part Number: 31000AG060 Subaru Baja 2.5L TURBO S/S 4WD T 2004
    http://parts.subaru.com/p/Subaru__/A...1000AG060.html

    TV1B4YCFAB Part Number: 31000AF730 Subaru Legacy 2.5L S/S 4WD GT Sedan Wagon Limited Sedan 2004
    http://parts.subaru.com/p/Subaru__/A...1000AF730.html

    TV1B4YCFBB Part Number: 31000AF760 Subaru Legacy 2.5L S/S 4WD GT Sedan Wagon Limited Sedan 2004
    http://parts.subaru.com/p/Subaru__/A...1000AF760.html

    TV1B4MB5AB Part Number: 31000AF950 Subaru Legacy 2.5L TURBO S/S 4WD BAJA-B PICK UP 2005, 2006
    http://parts.subaru.com/p/Subaru__/A...1000AF950.html
    Last edited by camroncamera; Yesterday at 03:24 AM.

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    I chimed in on an old NASIOC thread on Sport Shift. My hopes of a straightforward Sport Shift transmission swap into my '98 BK were crushed when it was explained to me that the Phase 1 Engine & ECU will not talk to the Phase 2 Transmission and TCU.
    However, '99 Legacy owners could take advantage of their transition year and probably make it work with their Phase 1.5 Engine/ECU and Phase 2 Tranny/TCU:
    https://forums.nasioc.com/forums/sho...1#post45129590

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    What is the difference between the '98 Legacy ECU for Phase 1 EJ25D, and the '99 Legacy ECU for Phase "1.5" EJ25D? If they are interchangeable, then maybe the Sport Shift TCU could be made to work in pre-'99 Legacy 2.5's?

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    My JDM Sport Shift assembly arrived today, It's pretty nice! So anyway I talked to the transmission shop just before closing, they took it for a test drive and agreed with my symptoms, which they described as "weird" haha. Tomorrow they'll take off the pan and have a look inside for metal bits. Seems like it could be a parking gear issue.





    Last edited by camroncamera; 05-22-2017 at 12:59 AM.

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    Reserved for bookmarks:

    User wtdash discusses Sport Shift for WRX on NASIOC:
    https://forums.nasioc.com/forums/sho....php?t=2693422

    User Setnev discusses Phase I to Phase II electronics conversion:
    http://legacygt.com/forums/showthrea...on-258372.html

    User RE3Rotor's 04 FXT:
    VTD and Sportshift discussion
    http://www.subaruforester.org/vbulle...ml#post4261642

    Pins for ECU/TCU Modules:
    http://www.mouser.com/ProductDetail/...GtMP60RShWAA==

    The epic Harness Merge thread on RS25:
    http://www.rs25.com/forums/f128/t141...e-harness.html

    Power Mode discussion for Phase 2 Transmissions, also includes useful downloads of TCU pinouts/diagnostics:
    http://www.subaruoutback.org/forums/...ower-mode.html
    Last edited by camroncamera; Yesterday at 05:24 AM.

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