SUBARU NEXGEN FLEX FUEL UPGRADE + FUEL PRESSURE KIT WRX 2011-2014

Part Details:

Expand your 2011–2014 Subaru WRX’s fuel system capabilities with this all-in-one flex fuel and pressure monitoring solution. Designed to give tuners accurate data on both ethanol blend and fuel pressure, this kit allows your ECU to adapt fueling strategies in real time — whether you’re running pump gas, E85, or anything between.

Built for compatibility with COBB Accessport maps and custom calibrations, the NexGen system brings modern fuel-management flexibility to older-generation WRXs without complicated wiring or fabrication. With precise sensors and robust hardware, it’s an ideal upgrade for enthusiasts seeking performance and reliability.

Core Features

• Ethanol Content Sensor – Reads fuel mix to detect ethanol percentage accurately.

• Fuel Pressure Sensor – Monitors real-time fuel pressure to help avoid lean conditions and support higher-demand setups.

• Dedicated NexGen Module – Processes sensor data before relaying it to the vehicle’s ECU for tuning

• Plug-and-Play Harness & Mounting Hardware – Engineered for straightforward installation with factory fuel lines and connectors.

• Billet Adapters & Quick-Connect Fittings – Ensures seamless integration with the fuel rail system.

Benefits

• True Flex Fuel Capability – Lets the engine management system adjust fueling and ignition based on real-time ethanol content, eliminating the need to switch maps manually when changing fuel blends.

• Enhanced Tuning Precision – Fuel pressure feedback helps tuners optimize performance and safety across a broader range of operating conditions.

• Supports Off-The-Shelf & Custom Maps – Works with COBB’s NexGen Flex Fuel calibrations, giving you flexibility whether you’re tuning for power or economy.

Designed For

Specifically crafted for the 2011–2014 Subaru WRX, this kit brings modern flex fuel adaptability to earlier WRX platforms that didn’t include this functionality from the factory.

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