Powertrain

Engine, Drivetrain, Exhaust, Clutch, etc

  1. N/A Mods & Tuning

    Questions, Comments, Problems, etc about drivetrain modification issues.
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    52,128
    NHXRUNNER Latest: Calling all transmission issues on Xrunner NHXRUNNER, Oct 2, 2020
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  2. F/I Mods & Tuning

    Discussion Turbochargers, Superchargers, NOS and general FI issues.
    2,062
    47,363
    NHXRUNNER Latest: ISO Gen 1 TRD CAI install write up for my S/C NHXRUNNER, Jan 19, 2021 at 9:27 AM
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  3. Fluids & Maintenance

    Oil, Filters, Transmission Fluid, Brake Fluid, etc.
    534
    7,118
    madtrucker Latest: The dealership is killing me madtrucker, Oct 17, 2020
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    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!

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