COBB NexGen Stage 2 to NexGen Stg 2+ Flex Fuel Power Package Upgrade (NEXGENFF001) | Subaru STI 2008-2021

The COBB NexGen Stage 2 to NexGen Stg 2+ Flex Fuel Power Package Upgrade (NEXGENFF001) equips your STI with the hardware required to transition from a traditional Stage 2 setup into a responsive, ethanol-capable NexGen Stg 2+ configuration. This upgrade supports enhanced combustion stability, improved knock resistance, and greater tuning flexibility by enabling E85 or blended fuel strategies within COBB’s NexGen ecosystem.

KEY FEATURES

• Enables seamless transition from NexGen Stage 2 to NexGen Stg 2+ Flex Fuel configuration
• Supports ethanol-blended fuels for improved combustion efficiency and power potential
• Provides enhanced engine reliability through increased knock resistance on E85
• Integrates fully with COBB NexGen tuning architecture for consistent, predictable performance
• Designed to complement existing NexGen upgrades without redundant components
• Offers expanded tuning headroom for higher-load, higher-boost applications

TECHNICAL SPECIFICATIONS

• Compatibility: Designed specifically as an upgrade to NexGen Stage 2 systems
• Fuel Support: E85, pump gas, and blended ethanol mixtures
• System Behavior: Enables COBB’s advanced flex fuel logic within NexGen calibrations
• Application: Intended for high-performance street and track setups requiring greater fueling range
• Included Components: All necessary hardware to activate NexGen Stage 2+ flex fuel capability

VEHICLE FITMENT

• Subaru STI 2008–2021

COBB delivers proven, data-driven performance solutions engineered to optimize your Subaru with unmatched precision and reliability.