IAG Performance Spec High-Flow Direct GDI Fuel Injector Set 2022-2025 WRX | +24% Fuel Flow | High-Flow GDI Injectors

Overview

The IAG Spec High-Flow Direct GDI Fuel Injector Set by Nostrum is a precision-engineered upgrade designed specifically for the 2022-2025 Subaru WRX and other FA24-equipped Subaru models. These injectors replace the factory units with a direct-fit solution that increases fuel flow by 24%, supporting higher horsepower and boost levels while maintaining OEM-level drivability. Ideal for enthusiasts looking to unlock the full potential of their FA24 2.4L turbocharged engine, this injector set is built to deliver consistent, precise fuel delivery under demanding conditions.

Developed through a collaboration between IAG Performance and Nostrum, this injector set combines rigorous engineering and extensive in-vehicle testing to ensure reliability and performance. The injectors maintain an OEM-quality spray pattern, which is critical for smooth cold starts, stable idle, and responsive throttle response. One injector features an extended harness connector to accommodate the FA24’s unique coolant crossover pipe, simplifying installation without modification.

For Subaru owners, these injectors provide the fueling capacity necessary to support aggressive tuning and higher boost pressures, especially when paired with complementary upgrades like the IAG Spec High-Pressure Fuel Pump. Compatibility with E85 and ethanol blends further expands tuning flexibility, allowing for cooler combustion and increased resistance to detonation. This injector set is a key component for anyone building a high-performance FA24-powered Subaru WRX or similar platform.

Features & Specifications

This IAG Performance Spec High-Flow Direct GDI Fuel Injector Set is engineered for 2022-2025 Subaru WRX and other FA24 2.4L engine models, featuring a 24% increase in fuel flow over stock injectors. Constructed with high-quality materials and designed for direct fitment, it delivers precise fuel delivery and enhanced power potential for Subaru enthusiasts seeking reliable high-flow fueling solutions.

• Brand: IAG Performance
• Product: Spec High-Flow Direct GDI Fuel Injector Set
• Part Number: IAG-AFD-2507
• Fitment: 2022-2025 Subaru WRX (FA24 2.4L engine), also fits 2019+ Ascent, 2020+ Legacy XT, 2020+ Outback XT Wilderness
• Material: High-grade metals and plastics (OEM-quality components)
• Finish: Silver and black
• Construction: Precision engineered, direct-fit injectors with extended harness on Cylinder 1 injector
• Origin: Engineered in collaboration with Nostrum (USA-based development)
• Power Gains: Supports up to 600 WHP on gasoline, 480 WHP on E85
• Tuning Required: Yes, professional ECU calibration recommended
• Flow Rate Increase: 24% over stock (17.5 g/s at 100 bar vs. 14.146 g/s stock)
• Max Operating Pressure: 240 bar / 24 MPa / 3480 psi
• Spray Pattern: OEM comparable for smooth drivability
• E85 Compatibility: Fully compatible with ethanol blends
• Recommended Tuning Suite: COBB AccessPort supported

Key Benefits

• Performance: Increased fuel flow supports higher horsepower and boost levels for aggressive tuning on the FA24 engine.
• Fitment: Direct bolt-in design with an extended harness injector for easy installation on the 2022+ WRX without modifications.
• Fueling Precision: Maintains OEM-quality spray pattern for smooth cold starts, stable idle, and responsive throttle.
• Flex Fuel Ready: Compatible with E85 and ethanol blends, enabling cooler combustion and improved knock resistance.
• Reliability: Engineered and tested by Nostrum and IAG to meet or exceed OEM standards for durability and consistency.
• Tuning Support: Compatible with COBB tuning devices and supported by certified tuners for optimized calibration.

What's Included

• 4× IAG Spec High-Flow Direct GDI Fuel Injectors
• 4× Injector Clips
• Installation instructions with step-by-step guidance

Installation & Compatibility

Installation is straightforward thanks to the direct-fit design and the extended harness on the Cylinder 1 injector, which clears the FA24 coolant crossover pipe without modification. While the physical installation can be performed by experienced DIYers, professional ECU tuning is strongly recommended to ensure proper fueling, cold starts, and drivability. No special tools beyond standard fuel system tools are required for installation.

• Professional Installation: Recommended for tuning and calibration
• Modifications Required: None for physical installation
• Verify Compatibility: Confirm fitment for your specific model year and trim within 2022-2025 WRX or other FA24-equipped Subaru models

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