550cc Fuel Injectors for Subaru WRX STi - Bosch EV14 High Performance Set
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Upgrade your Subaru’s fueling with SouthBay’s 550cc High-Performance Fuel Injectors. Built using genuine Bosch EV14 technology, these injectors offer superior fuel atomization and a fast response time for smoother idling and improved throttle response. Perfect for Stage 1 or Stage 2 builds looking for OEM-quality fitment with aftermarket flow
Optimize Your Subaru’s Performance
SouthBay Fuel Injectors presents the 550cc injector kit specifically engineered for the Subaru WRX and STi platforms. Utilizing the industry-standard Bosch EV14 internal components, these injectors provide a significant upgrade over older EV1 or side-feed technologies.
Key Features & Benefits:
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Bosch EV14 Technology: Known for high-pressure capability and consistent flow rates even at low pulse widths.
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Superior Atomization: Improved spray patterns lead to better combustion efficiency and cleaner emissions.
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Plug-and-Play Compatibility: Designed to fit directly into the Subaru intake manifold without complex modifications.
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Data Matched: Each set is flow-matched to within 1%–2% to ensure cylinder-to-cylinder balance.
Technical Specifications:
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Flow Rate: 550cc/min at 3 Bar (43.5 psi).
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Impedance: High Impedance (Saturated).
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Connector Type: USCAR / EV6 / EV14.
Fitment Interjection (Technical Insight)
These injectors are a direct fit for:
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2002–2014 Subaru WRX (Top Feed Models)
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2007–2021 Subaru WRX STi (Top Feed Models)
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Note: If your vehicle originally came with side-feed injectors (e.g., early 04-06 STi), you will require a side-feed to top-feed conversion rail kit to use these Bosch EV14 units.
