SUBARU CAN FLEX FUEL UPGRADE + FUEL PRESSURE KIT WRX 2015-2017

Part Details:

Elevate your 2015–2017 Subaru WRX’s adaptability and performance with this advanced Flex Fuel and fuel system monitoring upgrade. This comprehensive kit gives your tuner the real-time ethanol content and fuel pressure data needed for safe and efficient tuning across a wide range of fuel blends, including high-ethanol fuels like E85.

Engineered for plug-and-play installation, the system integrates directly with your WRX’s CAN bus for clean, reliable communication without messy wiring. Whether you’re running pump gas, E10, or ethanol-rich fuels, this kit lays the foundation for optimized fueling strategies and smoother power delivery.

What’s Included

• Ethanol Content Sensor — Accurately reads ethanol percentage in the fuel.

• CAN Gateway Module — Interfaces sensor data into the car’s network cleanly and reliably.

• Dedicated Vehicle Harness & Mounting Bracket — Designed for a direct, tidy fitment on your WRX.

• Fuel Pressure Sensor Kit — Adds real-time fuel pressure monitoring to the system, ideal for high-demand setups and safer tuning.

Key Benefits

• True flex-fuel capability — Allows your ECU/tuner to adapt fuel delivery based on the detected ethanol mix.

• Enhanced tuning data — Fuel pressure insights help avoid lean conditions and support power upgrades.

• Clean CAN integration — Minimizes wiring clutter and maximizes signal fidelity.

• Designed for 6MT WRX models — Compatible with 6-speed manual WRX from 2015 through 2017.

Why Choose This Upgrade

If you’re planning to use ethanol-rich fuels or simply want your tuner to work with precise fuel composition and pressure feedback, this kit provides the essential hardware for confident, high-performance calibration. From daily driving flexibility to aggressive builds that take advantage of high-ethanol blends, this system equips your WRX with the data it needs to run safely and effectively under a wide variety of conditions.

Recommended Supporting Fuel Components

• Fuel Injectors – higher ethanol content often requires increased fuel flow to maintain proper air-fuel ratios.
• Fuel Pumps – support the additional fuel volume needed for ethanol and higher power levels.
• Fuel Pressure Regulators – help maintain consistent fuel pressure across varying ethanol blends.
• Fuel Delivery Components – explore supporting fuel system parts designed to work together.

Learn more about COBB Tuning performance solutions and supporting components