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Regular Price: $1,799.00 - Instant discount: $139.01 = $1,659.99
2022-2026 Subaru WRX (FA24F)
2019-2026 Subaru Ascent
2020-2026 Subaru Legacy XT / Legacy Sport
2020-2026 Subaru Outback XT / Outback Wilderness
Unlock the full fueling potential of your Subaru FA24 engine with the Nostrum High Performance Upgraded Direct Injectors. Engineered for serious power builds, these direct injection injectors deliver a 24% increase in mass flow over stock while maintaining OEM-level spray quality, drivability, and reliability.
Designed as a direct replacement for factory FA24 injectors, these upgraded units retain the original injector footprint while incorporating improved internal components and an optimized harness configuration for easier installation. Each set includes four serialized and flow-matched injectors, along with tuning data to ensure accurate calibration and consistent performance.
With the ability to support up to 600 WHP on gasoline and 480 WHP on E85, these injectors provide the fuel delivery required for high-performance builds while maintaining excellent idle quality and drivability.
24% Mass Flow Increase Over Stock
OEM-Equivalent Spray Pattern for optimal combustion efficiency
Flow Matched & Serialized Set of 4 Injectors
Direct Bolt-In Replacement using OEM-style mounting and fitment
E85 Compatible for flex-fuel or ethanol performance builds
Maintains OEM ECU Control
Supports Up To 600 WHP (Gasoline) / 480 WHP (E85)
Custom Harness Connector Design clears the FA24 coolant crossover pipe
Includes Tuning Data for Accurate Calibration
| Specification | Details |
|---|---|
| Flow Increase | +24% Over Stock |
| Mass Flow Rate (Viscor 16A) | 17.5 g/s @ 100 bar |
| Volume Flow (nHeptane) | 1450 cc/min |
| Operating Pressure | 240 bar / 24 MPa / 3480 psi |
| WHP Potential (Gasoline) | Up to 600 WHP |
| WHP Potential (E85) | Up to 480 WHP |
| Tune Requirement | Yes |
| Recommended Tuning Suite | COBB |
Fuel injector upgrades must balance flow capacity, spray quality, and drivability. Nostrum’s engineers carefully developed these injectors to maintain a precise spray pattern and optimized atomization, ensuring efficient combustion and preventing common issues like poor idle quality, excessive soot, knock, and fuel wash.
By maintaining OEM-like spray characteristics while increasing fuel delivery, these injectors allow your engine to produce more power without sacrificing reliability or drivability.
To fully maximize the performance of these injectors, pairing them with Nostrum’s upgraded FA24 High Pressure Fuel Pump (HPFP) is recommended. The upgraded pump provides 37% more flow than the factory unit, ensuring the injectors receive adequate fuel supply under high boost and high load conditions.
Set of 4 Flow-Matched & Serialized Direct Injectors
Installation Instructions
Tuning Guide (Dealer & Certified Tuners Only)
Every Nostrum product is backed by a Limited Manufacturer Lifetime Warranty, providing confidence that your fueling upgrade is built to perform and built to last.
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