Description

The HKS Injector Upgrade Kit represents a sophisticated, engine-specific solution for enhanced fuel delivery in the Nissan GT-R R35. It features specially designed injectors that account for the unique characteristics of the VR38DETT combustion chamber and port configuration. Unlike conventional high-flow injectors that simply increase volume, this system employs advanced multi-jet technology and precise spray targeting to optimize fuel atomization and distribution.

Through its 14-hole layout, dual-jet design, and valve-head-directed injection angle, this kit achieves superior combustion stability. Consequently, it supports significantly increased power targets with appropriate supporting modifications.

Product Highlights

🎯 VR38-Specific Design for Optimized Combustion
Engineered exclusively for the VR38DETT engine’s unique port geometry, these injectors feature specialized spray targeting that directs fuel toward the valve head rather than allowing impingement on port walls. Consequently, they minimize fuel adhesion and promote superior atomization, resulting in more efficient combustion and reduced risk of detonation under high-load conditions.

💨 Advanced Multi-Jet Technology for Superior Atomization
Utilizing a sophisticated 14-hole layout combined with dual-jet configuration, these injectors create an optimized injection angle. This design allows fuel to pass cleanly between the valve stem and port wall. This advanced approach ensures thorough fuel distribution within the combustion chamber while preventing the wall-wetting phenomenon. Such problems plague many conventional high-flow injectors.

⚡ Precision Matched Flow Characteristics for Cylinder Balance
Each injector in the kit is flow-matched within an exceptional ±1% tolerance range, ensuring identical fuel delivery across all six cylinders. This precision matching promotes balanced combustion, consistent exhaust gas temperatures, and optimal performance. These factors are critical when operating at elevated power levels where cylinder-to-cylinder variations can cause significant issues.

🔌 Direct Plug-and-Play Compatibility
Maintaining the same electrical connector configuration as factory injectors, this kit requires no wiring modifications or adapter harnesses. This plug-and-play compatibility simplifies installation while ensuring reliable electrical connections. Additionally, it maintains proper impedance matching with the factory engine management system.

Technical Specifications

Product Name: Injector Upgrade Kit

Model Code: 14002-AN005

Compatibility: Nissan GT-R R35 (VR38DETT, 07/2007 onwards). Specifically engineered for the VR38 engine’s combustion chamber and port configuration.

Injector Specifications:

• Discharge Capacity: 1000 ml/min (significantly increased over factory specifications)

• Injector Type: Top feed / High resistance design

• Connector: Direct factory replacement with black connectors

• Spray Pattern: 14-hole configuration with dual-jet design

• Spray Targeting: Specifically angled toward valve head rather than port walls

• Flow Matching: ±1% tolerance across all six injectors

Electrical Characteristics:

• Invalid Injection Time: Varies with supply voltage (e.g., 816 μsec at 12V, 590 μsec at 14V)

• Voltage Response: Detailed calibration data provided for accurate engine management programming

Kit Composition:

• Injector Configuration:

  • Two injectors specifically for cylinders #2 and #5

  • Four injectors for cylinders #1, #3, #4, and #6

• Total Set: Six precisely matched injectors for complete engine coverage

Critical Application Notes:

• Not for Twin Injector Systems: Specific spray angle prevents use as secondary injectors in staged systems

• Fuel System Requirements: Mandatory upgrade to high-flow fuel pump and appropriate fuel delivery piping

• Professional Tuning Essential: Requires comprehensive ECU recalibration for proper fueling and timing

Performance & Engineering Philosophy

Goal: To provide a significant increase in fuel delivery capacity while optimizing combustion efficiency through VR38-specific spray targeting and superior atomization—supporting elevated power levels without sacrificing driveability or combustion stability.

Focus: Engine-specific design integration, precision flow matching for cylinder balance, advanced atomization technology for combustion efficiency, and direct compatibility that minimizes installation complexity while maximizing performance results.

Installation & System Integration

🔧 Professional Installation and Calibration Required
While electrical connections are plug-and-play, proper installation requires careful handling, appropriate sealing, and comprehensive engine management calibration to ensure optimal performance and prevent lean or rich conditions.

⚠️ Mandatory Supporting System Upgrades:

• Fuel Pump Enhancement: High-flow fuel pump system absolutely required to support increased injector capacity

• Fuel Delivery Piping: Upgraded fuel lines and rails recommended to maintain adequate supply pressure

• Engine Management: Professional ECU tuning essential to recalibrate injector timing, pulse width, and compensation tables

• Fuel Pressure Regulation: Appropriate adjustment or upgrade of fuel pressure regulator to maintain optimal operating parameters

🎯 Target Application Scenarios:

• Moderate to High Power Builds: Supporting power levels significantly beyond factory capabilities

• Turbo Upgrade Projects: Providing necessary fuel delivery for increased boost and airflow from turbo modifications

• Track and Competition Vehicles: Where consistent fuel delivery under sustained high-load conditions is critical

• Reliability-Focused Upgrades: Replacing factory injectors that may be approaching capacity limits or showing inconsistency

Performance Advantages & Technical Rationale

🔥 Enhanced Combustion Stability Through Reduced Wall Wetting
By specifically targeting the valve head and utilizing the optimized 14-hole spray pattern, these injectors dramatically reduce fuel impingement on port and combustion chamber surfaces. This results in more consistent combustion, improved throttle response, and reduced tendency for detonation under high-load conditions.

⚖️ Precision Flow Matching for Optimal Cylinder Balance
The exceptional ±1% flow matching ensures that each cylinder receives virtually identical fuel quantities, promoting balanced exhaust gas temperatures, consistent combustion characteristics, and maximum power potential without individual cylinder limitations.

🌊 Superior Atomization for Improved Thermal Efficiency
The multi-hole design creates finer fuel droplets that vaporize more completely and rapidly within the combustion chamber. This enhanced atomization improves thermal efficiency, reduces particulate formation, and supports cleaner combustion. These results are particularly important at elevated power levels where combustion quality directly affects reliability.

🔩 Direct Compatibility Minimizes Installation Variables
Maintaining factory electrical and physical interfaces eliminates potential installation errors. It ensures proper integration with the vehicle’s existing fuel and electrical systems. This allows focus on performance optimization rather than addressing compatibility issues.