F/I Mods & Tuning

Discussion Turbochargers, Superchargers, NOS and general FI issues.

Page 1 of 101
Sort By:
Title Start Date
Replies Views
Last Message ↓
  1. Sticky Threads
  2. iniazy
    Sticky

    Prado URD Kit Transmission Valve Body Upgrade

    iniazy, Nov 16, 2014 ... 2 3
    Replies:
    51
    Views:
    5,776
    Redlantern
    Redlantern
    Feb 4, 2017
  3. My68ur8trd
    Sticky

    TRD S/C parts list

    My68ur8trd, Jan 14, 2010 ... 2
    Replies:
    25
    Views:
    9,355
    NHXRUNNER
    NHXRUNNER
    Dec 28, 2016
  4. hotrodt
    Sticky

    F/I Horsepower and Supporting Mods

    hotrodt, May 16, 2012 ... 11 12 13
    Replies:
    251
    Views:
    30,688
    NHXRUNNER
    NHXRUNNER
    Oct 26, 2016
  5. Super Werty
    Sticky

    PCV System & Oil Catch Can

    Super Werty, Jan 13, 2010 ... 10 11 12
    Replies:
    234
    Views:
    20,407
    JikayouTofuShopXR
    JikayouTofuShopXR
    Sep 9, 2016
  6. revobreaker
    Sticky

    T56 Write UP

    revobreaker, May 24, 2013 ... 3 4 5
    Replies:
    81
    Views:
    11,086
    brs
    brs
    Nov 28, 2015
  7. Murderface
    Sticky

    TRD blower belt

    Murderface, Sep 28, 2009 ... 2 3
    Replies:
    40
    Views:
    9,895
    bobber bill
    bobber bill
    Oct 5, 2015
  8. dpartinvr4
    Sticky

    Wet shot Nitrous with S/C

    dpartinvr4, Jan 27, 2013 ... 2
    Replies:
    33
    Views:
    6,885
    XMPLRY808
    XMPLRY808
    Sep 12, 2015
  9. Torspd
    Sticky

    ARP Head Studs for 1GR and Main Studs

    Torspd, Dec 23, 2011
    Replies:
    5
    Views:
    1,819
    Torspd
    Torspd
    Sep 11, 2014
  10. sdxrunner619
    Sticky

    Urd fuel pump filter...

    sdxrunner619, Feb 4, 2012 ... 2 3
    Replies:
    52
    Views:
    10,247
    skygear
    skygear
    Aug 27, 2014
  11. butters607
    Sticky

    OEM and AfterMarket Fuel Pressure Regulator thread

    butters607, Jul 29, 2012 ... 4 5 6
    Replies:
    108
    Views:
    13,885
    skygear
    skygear
    Aug 27, 2014
  12. dmbfan73
    Locked Sticky

    trd supercharger questions

    dmbfan73, Mar 12, 2009 ... 2 3
    Replies:
    43
    Views:
    15,215
    2006nightrider
    2006nightrider
    Mar 19, 2009
  13. quickshift93
    Locked Sticky

    URD vs TRD Supercharger Info & Stats

    quickshift93, Mar 6, 2008 ... 4 5 6
    Replies:
    109
    Views:
    29,195
    K2
    K2
    Mar 29, 2008
  14. Normal Threads
  15. Torspd

    TRD(Magnuson) S/C Quick Change Pulley

    Torspd, Jun 24, 2017 at 5:02 PM
    Replies:
    2
    Views:
    47
    whippersnapper02
    whippersnapper02
    Jun 25, 2017 at 2:38 PM
  16. armyoffoo

    Replace valve springs, seats, seals with heads installed?

    armyoffoo, Jun 16, 2017
    Replies:
    5
    Views:
    69
    Torspd
    Torspd
    Jun 16, 2017
  17. iniazy

    Re-Installing My Supercharger

    iniazy, Aug 18, 2014 ... 19 20 21
    Replies:
    404
    Views:
    20,057
    NUPEPRIME
    NUPEPRIME
    Jun 7, 2017
  18. Wizard

    Where does this washer go? In the middle of TRD SC install

    Wizard, Jun 1, 2017
    Replies:
    14
    Views:
    154
    NHXRUNNER
    NHXRUNNER
    Jun 2, 2017
  19. Kris

    APR X1 URD S/C Stage 3 map needed

    Kris, May 30, 2017
    Replies:
    4
    Views:
    96
    Jeremias
    Jeremias
    May 30, 2017
  20. wolfpack_5150

    This guy cracks me up.

    wolfpack_5150, Jan 4, 2017 ... 2
    Replies:
    37
    Views:
    738
    o0opackersfano0o
    o0opackersfano0o
    May 18, 2017
  21. iniazy

    New TRD FJ install with UCON FLEX

    iniazy, Apr 14, 2017
    Replies:
    12
    Views:
    322
    iniazy
    iniazy
    May 2, 2017
  22. Ziggy297

    URD stage 3 clutch disc

    Ziggy297, Nov 24, 2016 ... 2 3
    Replies:
    44
    Views:
    1,647
    Ziggy297
    Ziggy297
    Apr 25, 2017
  23. TacoSawce

    Transmission stuck in 4th gear

    TacoSawce, Apr 1, 2017
    Replies:
    2
    Views:
    129
    SgtBadA
    SgtBadA
    Apr 1, 2017
  24. hybrid2.0

    TRD S/C ECM Reflash with the normally aspirated set up!!

    hybrid2.0, Apr 8, 2012
    Replies:
    14
    Views:
    803
    NHXRUNNER
    NHXRUNNER
    Mar 31, 2017
  25. Hard Taco

    2.7 urd pulley

    Hard Taco, Jun 30, 2015
    Replies:
    9
    Views:
    740
    Lucifer29
    Lucifer29
    Mar 20, 2017
  26. NHXRUNNER

    P0037

    NHXRUNNER, Feb 5, 2017
    Replies:
    13
    Views:
    226
    NHXRUNNER
    NHXRUNNER
    Mar 15, 2017
  27. rat7761

    '05+ Tacoma Clutch Shuttle Valve Removal

    rat7761, Jun 4, 2015 ... 2
    Replies:
    21
    Views:
    1,623
    SgtBadA
    SgtBadA
    Feb 20, 2017
  28. disciple X

    Mk3 Install No Start. Help!

    disciple X, Jan 18, 2017
    Replies:
    16
    Views:
    340
    fishsticks
    fishsticks
    Feb 4, 2017
  29. Moodywizard

    2007 FJ Cruiser Magnuson SC installed now have AFR issues

    Moodywizard, Jan 25, 2017
    Replies:
    16
    Views:
    305
    blackx-runner
    blackx-runner
    Jan 29, 2017
  30. wolfpack_5150

    Would this work for automatics on a dyno for accurate numbers?

    wolfpack_5150, Jan 25, 2017
    Replies:
    3
    Views:
    105
    Gadget
    Gadget
    Jan 25, 2017
  31. iniazy

    Options for Compression Ratios 1GR

    iniazy, May 27, 2014 ... 4 5 6
    Replies:
    117
    Views:
    5,866
    iniazy
    iniazy
    Jan 16, 2017
  32. NHXRUNNER

    Oil Pressure Sender Install

    NHXRUNNER, Aug 7, 2016
    Replies:
    16
    Views:
    546
    devan08
    devan08
    Jan 15, 2017
  33. NHXRUNNER

    Water Temp Guage

    NHXRUNNER, Aug 9, 2016
    Replies:
    11
    Views:
    460
    NHXRUNNER
    NHXRUNNER
    Jan 9, 2017
  34. STONER-X

    another TRD pump Q

    STONER-X, Nov 3, 2013
    Replies:
    9
    Views:
    583
    wolfpack_5150
    wolfpack_5150
    Jan 4, 2017
Showing threads 1 to 20 of 2,011

Thread Display Options

Loading...
(You must log in or sign up to post here.)
Page 1 of 101
Toggle Width

  • About Us

    XR-Underground is a dedicated community of Toyota X-Runner enthusiasts that was launched in January 2007. X-Runner Underground.com, referred to as XRU by our regular members, offers an active discussion forum, group events, specialty merchandise, a welcoming community of owners and the most information you can find about the Toyota X-Runner on the internet!

  • Quick Navigation

    Open the Quick Navigation

  • Like us on Facebook

    X-Runner Underground

  • Your donations keep XRU going

    XRU is a forum for the users, by the users. We receive very limited funding from vendors so we really rely on donations to cover our operating costs and to provide products and giveaways at events. Every dollar helps!

    If you are able to donate, we'd really appreciate your help.