Cobb NexGen Flex Fuel Ethanol Sensor Kit Subaru WRX 2011-2014 | 324650

Product Fitment: 

2011-2014 Subaru WRX

Unlock full flex-fuel capability on your Subaru WRX with COBB’s all-in-one solution. The NexGen Flex Fuel Ethanol Sensor Kit integrates seamlessly with your vehicle’s ECU to monitor ethanol content in real time—enabling safe use of E85 (or variable ethanol blends) and maximizing performance without compromise.

What’s Included

• Ethanol content sensor with powder-coated aluminum bracket

• Fuel lines pre-assembled with OE-quality quick-disconnect fittings for factory fuel rails

• Billet adapter to allow integration with COBB Fuel Rail Line Kit (if applicable)

• NexGen Flex Module mounted to the passenger side strut tower for data processing and relaying ethanol content to ECU

• Plug-and-play wiring harness using OE-quality connectors for easy installation

Key Features & Benefits

• Real-Time Ethanol Sensing: Continuously measures ethanol content of the fuel being fed to the engine and sends the data to your ECU so you can run flex-fuel calibrations with confidence

• Seamless Integration: Designed for WRX models (2011-2014) with full compatibility for COBB NexGen Flex Fuel off-the-shelf maps

• High-Quality Components: From the billet adapter to OE-style quick-disconnect fittings, the kit delivers reliable construction built for performance environments

• Street Legal (Except California): The product is legal under EPA’s Anti-Tampering Policy for sale and use on-street in all states that accept the Clean Air Act provisions. Not legal for sale or use in California on emission-controlled motor vehicles

Applications

• Ideal for owners planning to run E85 or ethanol-variable fueling, staging upgrades, or adaptive tuning strategies

• Works best when paired with COBB Accessport and a NexGen Flex Fuel map for maximum performance and reliability

When you run ethanol blends, the variable ethanol content can throw off fuel trims, timing, and overall engine stability. This kit ensures your ECU knows exactly what it’s dealing with — allowing the calibration to adjust fuel and ignition strategy accordingly. That means you can take advantage of ethanol’s performance benefits while maintaining safe, consistent operation.

Whether you’re on the street, track, or running variable fuel blends, the COBB NexGen Flex Fuel Ethanol Sensor Kit gives your Subaru the intelligence it needs to perform confidently.