Description

The HKS Power Editor R Vehicle-Specific Harness is the essential link that transforms the universal Power Editor R unit into a dedicated, high-resolution tuning tool for the GR Yaris Gen2. This plug-and-play harness enables the Power Editor R to intercept and recalibrate key sensor signals, allowing for sophisticated boost, fueling, and throttle control without cutting factory wires. It unlocks the ability to create custom, multi-dimensional tuning maps tailored to your specific modifications and driving needs, providing the connectivity required for professional-grade tuning.

Product Overview & Purpose

The Power Editor R is a versatile tuning device, but it requires a vehicle-specific interface to function. This harness provides that interface for the Gen2 GR Yaris. It connects seamlessly between the car’s factory engine sensor harness and the Power Editor R unit, giving you access to critical data channels for precise electronic control. When combined with the free Easy Writer software, it allows you to build custom tuning files that adjust parameters based on RPM, gear, throttle position, and vehicle speed.

Product Highlights

🔌 True Plug-and-Play Installation
The harness features vehicle-specific connectors that plug directly into the factory sensor wiring loom via an intercept method. This means no cutting, splicing, or soldering of OEM wires is required, ensuring a clean, reliable, and completely reversible installation.

📈 Multi-Dimensional Tuning Control
Unlike basic boost controllers, this system allows for complex, conditional tuning. By accessing not just boost pressure but also throttle position, RPM, and vehicle speed signals, you can create maps that apply different corrections for each gear, at various RPM points, and at partial vs. full throttle. This enables incredibly smooth and drivable power increases that feel factory-integrated.

⚙️ Wide-Range Signal Correction
The harness provides access to the airflow sensor (AFM) signal, allowing for more comprehensive fuel and load corrections than systems that only manipulate boost pressure. This wider range of adjustment supports more aggressive and safe tuning while maintaining optimal drivability.

🛡️ Safe & Reversible with Reset Function
The system includes a reset connector. By unplugging the Power Editor R and connecting the reset plug, the vehicle is instantly returned to its factory sensor signal state, making dealer visits or emissions testing worry-free.

Technical Specifications & Requirements

• Product Name: Power Editor R Vehicle-Specific Harness (TR-1 for GR Yaris Gen2)

• Model Code: 42999-AT001

• Compatibility: Toyota GR Yaris (4BA-GXPA16, G16E-GTS, April 2024+ Gen2 production).

• Function: Interface harness connecting vehicle sensors to the HKS Power Editor R Universal Unit (42018-AK002 – SOLD SEPARATELY).

• Accessible Channels:

  • Ch1: Boost Pressure Sensor

  • Ch2: Intake Manifold Pressure (MAP) Sensor

  • Ch4: Throttle Position Sensor

  • Ch5: Air Flow Meter (AFM)

  • RPM Signal

  • Vehicle Speed Signal (Optional)

• Required Component: HKS Power Editor R Universal Unit (42018-AK002).

• Required Software (for Custom Tuning): HKS Easy Writer for Power Editor R (Free Download).

• Note: This harness does not include pre-loaded tuning data. A custom calibration must be created or loaded.

Performance Philosophy

• Goal: To provide a professional-grade tuning interface that bridges the gap between simple plug-in tuners and full stand-alone ECUs. The focus is on detailed, customizable control while preserving OEM driveability and safety protocols.

• Focus: An enthusiast and tuner-focused platform. This harness is for the GR Yaris owner or professional tuner who wants to actively participate in tuning their car, understands the relationship between sensors and performance, and seeks to extract optimized, safe power from bolt-on modifications (intake, exhaust, intercooler, etc.) through precise, custom calibration.

Installation & Tuning Notes

• 🔧 Professional Installation & Tuning Strongly Recommended
  While the harness is plug-and-play, the tuning process requires significant knowledge of engine management. This is not a pre-loaded “chip.” You must create or obtain a base map and tune the vehicle, preferably on a dyno with wideband air/fuel monitoring. Installation by a professional ensures all connections are secure and correctly routed.

• ⚠️ System Requirements & Notes

  • MUST purchase the Power Editor R Universal Unit (42018-AK002) separately.

  • The factory boost gauge will display uncorrected manifold pressure and will not reflect target boost levels set in the Power Editor R.

  • All tuning responsibility falls on the user or their tuner. A strong understanding of fuel, timing, and boost safety is essential.

  • This product is designed for use with the Gen2 GR Yaris only.