HKS F-CON V Wiring Harness

2002–2007 Subaru WRX / 2004–2007 Subaru STI

Part #: 4202-RF008

Overview

The HKS F-CON V Wiring Harness is an essential component for enthusiasts seeking precise engine management on their Subaru WRX and STI models from 2002 to 2007. Designed to seamlessly connect the F-CON iS piggy-back ECU to your vehicle's stock ECU, this wiring harness allows for easy installation without the need for modifications or cutting. It provides a reliable interface for tuning and optimizing fuel and ignition parameters, especially when upgrading intake and exhaust systems.

Whether you're aiming for improved performance, better throttle response, or enhanced drivability, the F-CON V Wiring Harness ensures your modifications are accurately managed. It is ideal for street-driven cars, performance upgrades, or tuning enthusiasts who want a straightforward, plug-and-play solution to control and monitor engine parameters effectively.

Key Features

The HKS F-CON V Wiring Harness offers a range of advanced features designed to enhance your vehicle's tuning capabilities and ensure a smooth installation process:

• Custom vehicle-specific wiring harness tailored for Subaru WRX (02-07) and STI (04-07) models, ensuring perfect fitment and connection integrity.
• Designed to connect directly to the stock ECU, eliminating the need for cutting or splicing wires, which preserves factory wiring and simplifies installation.
• Enables the F-CON iS piggy-back ECU to control fuel and ignition maps, providing precise tuning capabilities for modified engines.
• Includes features for collecting OBD II diagnosis data, allowing for real-time monitoring and correction of engine parameters based on stock closed-loop correction values.
• Supports upgrades such as intake and exhaust modifications by adjusting fueling and ignition settings to optimize performance and reliability.
• Constructed with high-quality wiring and connectors to ensure durability and consistent signal transmission under demanding conditions.
• Compatible with the latest engine management features, making it suitable for advanced tuning and performance applications.

Construction & Design

The HKS F-CON V Wiring Harness is built with precision and durability in mind. It features high-quality, vehicle-specific wiring that ensures a secure and reliable connection to your Subaru's factory ECU. The harness is designed to be compact and flexible, allowing for clean routing within the engine bay without interfering with other components.

Manufactured with robust connectors and insulated wiring, the harness withstands the heat, vibration, and environmental conditions typical of high-performance applications. Its plug-and-play design ensures a straightforward installation process, making it accessible for both professional tuners and DIY enthusiasts.

Installation & Fitment

The HKS F-CON V Wiring Harness is designed for a straightforward, bolt-on installation. It connects directly to the stock ECU and the F-CON iS piggy-back ECU, requiring no cutting, splicing, or extensive modifications. The harness is vehicle-specific, ensuring a perfect fit for Subaru WRX (02-07) and STI (04-07) models. No tuning or additional adjustments are necessary for basic operation, although fine-tuning should be performed after installation to maximize performance gains.

• Plug-and-play installation with factory connectors
• No cutting or modification of factory wiring required
• Compatible with stock and upgraded intake/exhaust systems

What's Included

• HKS F-CON V Wiring Harness for Subaru WRX (02-07) / STI (04-07)
• All necessary connectors and wiring components for complete installation
• Installation instructions and wiring diagrams

Ideal For

• Subaru WRX and STI owners looking to upgrade engine management
• Performance enthusiasts seeking precise fuel and ignition control
• DIY tuners and professional installers aiming for a reliable, plug-and-play solution
• Owners of modified engines requiring advanced tuning capabilities without factory ECU replacement