2004 Subaru WRX Performance Chips

    • AEM®ECU Extension / Patch Harness
      $234.15$187.32
      (0)
      Subaru WRX STI 2004, ECU Extension / Patch Harness by AEM®. This harness will allow you to connect ancillary electronic devices like turbo timers and data loggers into the engine management system without having to cut and splice...
      # 11141695
    • JET®Computer Upgrade Kit
      $374.06$299.25
      (0)
      Subaru WRX / WRX STI 2004, Computer Upgrade Kit by JET®. Provides Increase Horsepower. Improved Acceleration. Provides Power Increase All The Time. Custom Program The Chip For Any Modifications. Provides All Materials Required To...
      # 41033948
    Guides & Articles
    Are Superchips Really Super?Are Superchips Really Super?
    Although most automobile manufacturers try to achieve a balance between performance and emissions when the ECU is programmed, in reality more power can be obtained when certain engine control parameters are changed. Aftermarket superchips are made to adjust parameters to increase engine power and torque. The superchip gives a “boost” to your vehicle’s...
    The throttle controller will basically bypass the computer in the vehicle. It is designed to take the information right from the accelerator position sensor and compile it in a high speed controller circuit that compiles the signal sent from the Accelerator position sensors. With this controller you are able to program it to different options and the throttle...
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