650cc Subaru WRX STi Fuel Injectors - Bosch EV14 High Performance (Includes PNP Harness)

High-Flow Precision for Subaru EJ-Series Engines

The SouthBay 650cc fuel injector kit is the ideal upgrade for Subaru WRX and STi owners looking to push beyond factory limits. These injectors feature the latest Bosch EV14 technology, offering a significant improvement in atomization and response time over older Denso or EV1 style injectors.

Why Choose SouthBay 650cc Injectors?

• Plug-and-Play Simplicity: No soldering or harness cutting required. We include the specific PNP wire adapter harnesses to connect directly to your factory Subaru plugs.

• Ready for E85: Built with stainless steel internals, these injectors are fully compatible with all known fuels, including oxygenated fuels like E85, Q16, and M5.

• Data-Driven Performance: Don't guess your tune. We provide comprehensive tuning data (latency/dead time) and flow sheets for every set.

• Dynamic Flow Matching: Every set is flow-matched statically and dynamically to within 1% to ensure perfect cylinder-to-cylinder balance and a smooth idle.

Technical Specifications:

• Flow Rate: 650cc/min at 43.5 PSI (3 Bar).

• Impedance: 12 Ohm (High Impedance/Saturated).

• Spray Pattern: Wide Split Cone (multi-hole orifice) for superior atomization.

• Internals: Corrosion-resistant Stainless Steel.

4. Fitment Guide

These are Top Feed injectors designed for:

• 2002–2014 Subaru Impreza WRX (EJ205 / EJ255)

• 2007–2021 Subaru WRX STi (EJ257)

• 2006–2008 Subaru Forester XT (EJ25)

• 2007–2012 Subaru Legacy GT (EJ255)

• Note: If your vehicle has side-feed injectors, a conversion rail is required.