650cc Fuel Injectors for Subaru STI 2.5L Turbo - Bosch EV14 High Performance Set
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Boost your EJ257 performance with SouthBay’s 650cc Bosch EV14 Fuel Injectors, precision-engineered for the Subaru STI 2.5L Turbo. These injectors provide the perfect flow increase for "Stage 2" builds, offering superior atomization and faster response times than factory units. Enjoy a smoother idle and consistent power delivery in a direct-fit, plug-and-play package.
Optimized Fueling for the Subaru 2.5L Platform SouthBay’s 650cc fuel injector set is the ideal upgrade for Subaru owners seeking more headroom for increased boost and tuning. Built on the modern Bosch EV14 foundation, these injectors utilize a multi-hole nozzle that creates a finer fuel mist compared to older OEM technology. This results in better combustion efficiency, sharper throttle response, and more reliable performance under load.
Precision Matching & Reliability Every SouthBay injector set is dynamically flow-matched within 1% to ensure identical fueling across all cylinders—an essential safeguard for the EJ257 engine. These are high-impedance injectors, making them fully compatible with your factory Subaru ECU without the need for additional resistor boxes or complex wiring modifications.
Vehicle Fitment:
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Subaru Impreza WRX STI: 2004–2021 (2.5L Turbo EJ257)
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Subaru Forester XT: 2004–2013 (2.5L Turbo)
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Subaru Legacy GT: 2005–2012 (2.5L Turbo)
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Subaru Outback XT: 2005–2009 (2.5L Turbo)
Technical Specifications:
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Flow Rate: 650cc/min at 43.5 PSI.
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Core Technology: Genuine Bosch EV14 (High Impedance).
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Configuration: Top-feed.
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Included Hardware: High-grade Viton upper and lower O-rings for a secure, leak-free seal.
