COBB Flex Fuel Kits allow compatible Subaru platforms to safely run and adapt to varying ethanol blends by providing the ECU with real-time ethanol content data. This enables dynamic tuning across fuels such as pump gas, E30, and E85 while maintaining proper fueling and engine protection. Below you’ll find available COBB Flex Fuel Kits and related components for WRX and STI applications. Fitment varies by model year and engine type, and most setups require custom tuning along with supporting fuel system upgrades.
Shop COBB Flex Fuel Kits by Application
WRX Flex Fuel Kits (FA20 / FA24)
- Subaru CAN Flex Fuel Upgrade + Fuel Pressure Kit WRX 2015–2017
- Subaru CAN Flex Fuel Upgrade + Fuel Pressure Kit WRX 2018–2021
- COBB CAN Flex Fuel Upgrade Subaru WRX 2022–2025
- Subaru NEXGEN Flex Fuel Upgrade + Fuel Pressure Kit WRX 2011–2014
