Nostrum 1000cc Twin Spray PFI Injectors Most Subaru EJ Models | 1000cc/min Flow Rate | High-Flow Fuel Injectors

Overview

The Nostrum 1000cc Twin Spray PFI Injectors are precision-engineered fuel injectors designed specifically for Subaru EJ engine models. These injectors provide a direct replacement solution with all necessary seals included, delivering a substantial 66% increase in fuel flow compared to the stock WRX injectors. Ideal for enthusiasts upgrading to larger turbochargers or running E85 fuel, these injectors support significant horsepower gains when paired with proper tuning.

What sets Nostrum injectors apart is their application-specific design, featuring a twin spray, split gamma spray pattern with a unique bend angle tailored for the EJ cylinder head and intake valves. This side-specific spray pattern ensures optimal fuel atomization and combustion efficiency, closely replicating OEM spray characteristics. Nostrum’s commitment to quality is backed by a limited lifetime warranty and comprehensive installation and tuning guides developed in collaboration with tuning experts.

For Subaru owners, these injectors offer a reliable and efficient upgrade path that maintains drivability and engine health. The precise spray targeting reduces issues like poor idle quality, increased knock, and oil dilution, which are common with generic aftermarket injectors. Whether you’re pushing the limits on a turbocharged WRX or STI or seeking a robust fuel system upgrade for daily driving, Nostrum’s 1000cc injectors deliver consistent performance and peace of mind.

Features & Specifications

This Nostrum 1000cc Twin Spray PFI Injector is engineered for a wide range of Subaru EJ platforms, including WRX, STI, Forester XT, Legacy GT, and Outback XT models. Featuring a 1000cc/min flow rate and a twin spray pattern with a specific bend angle, these injectors are constructed to provide precise fuel delivery and improved combustion efficiency for high-performance applications.

• Brand: Nostrum
• Product: 1000cc Twin Spray PFI Injectors
• Part Number: L071-1272
• Fitment:
• 2002-2014 WRX
  2004-2005 STI (with top feed conversion)
  2006-2021 STI
  2004-2005 Forester XT (with top feed conversion)
  2006-2013 Forester XT
  2005-2009 Legacy GT/Outback XT (with top feed conversion)
  2005-2006 Saab 9-2x Aero
• Material: High-grade fuel injector components with OEM-quality seals
• Finish: Color-coded for side-specific installation
• Construction: Precision engineered with twin arc spray pattern and split gamma spray technology
• Origin: Manufactured with OEM-level quality control standards
• Flow Rate: 1000cc/min (66% increase over stock 565cc injectors)
• Tuning Required: Yes, recommended for optimal performance and safety
• Ethanol Compatibility: Fully compatible with E85 and other high ethanol blends
• Warranty: Limited lifetime warranty

Key Benefits

• Performance: Supports significant horsepower gains with a 66% increase in fuel flow over stock injectors, ideal for turbocharged EJ engines and E85 fueling.
• Fitment: Direct OEM replacement with all necessary seals included, no adapters or modifications required.
• Spray Pattern: Side-specific twin spray design with optimized bend angle ensures precise fuel atomization and combustion efficiency.
• Durability: Ethanol-compatible construction resists corrosion and wear, extending injector life under high-performance conditions.
• Tuning Support: Comprehensive tuning guides developed with Cobb and in-house calibration engineers simplify the upgrade process.
• Reliability: Limited lifetime warranty and detailed installation instructions provide confidence and peace of mind.

What's Included

• 1× Set of Nostrum 1000cc Twin Spray PFI Injectors (quantity as required for your engine)
• All necessary OEM-quality seals and O-rings
• Color-coded markings for side-specific installation
• Detailed installation guide with step-by-step instructions
• Tuning guide for Cobb AccessPort and other supported platforms

Installation & Compatibility

Installation of Nostrum 1000cc Twin Spray PFI Injectors is designed to be straightforward and similar to factory injector replacement, requiring no special adapters or fuel rail modifications. Basic hand tools are sufficient for most installations, making this a DIY-friendly upgrade for enthusiasts with moderate mechanical experience. However, professional installation is recommended if you are unfamiliar with fuel system components or Subaru EJ engine layouts. Proper tuning is essential to maximize performance and maintain engine safety, with tuning guides provided to assist your tuner or dealer.

• Professional Installation: Recommended for best results and safety
• Modifications Required: None; direct OEM replacement
• Verify Compatibility: Confirm fitment for your specific Subaru EJ model and year before purchase

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