HKS 14007-AF003 Fuel Upgrade Kit 650cc EJ20 Top-Feed Injectors

The HKS 14007-AF003 Fuel Upgrade Kit is a complete fuel system enhancement package designed for high-performance tuning applications that exceed the capabilities of the factory fuel system. This comprehensive kit includes large capacity 650cc/min fuel injectors and an upgraded fuel pump, providing the necessary fuel delivery for demanding engine modifications.

Key Features:

• Latest generation Bosch top-feed type fuel injectors with 650cc/min flow rate
• All injectors pass rigorous spray testing for consistent performance
• Matched injector sets ensure similar performance characteristics across all cylinders
• Conical nozzle design with single-spray pattern for optimized fuel atomization
• Includes both high-capacity injectors and upgraded fuel pump in one complete package
• Designed specifically for EJ20-powered Subaru WRX STI applications

This improved version of HKS's earlier Fuel Upgrade Kit provides a safe and effective solution for supplementing fuel requirements in high-level tuning scenarios. The top-feed injector design ensures reliable performance and compatibility with aftermarket engine management systems. Note that installation requires connector replacement and minor fuel rail modifications on some models, and tuning adjustments are necessary due to different injector dead time compared to previous HKS 2-jet type injectors.