COBB Stage 1 to NexGen Stage 2+ Flex Fuel Power Package Upgrade Black (SUB003NG2S1FF-S1-UP-BK) | Subaru STI 2008-2014

The COBB Stage 1 to NexGen Stage 2+ Flex Fuel Power Package Upgrade Black (SUB003NG2S1FF-S1-UP-BK) provides the essential hardware required to transition your 2008–2014 Subaru STI from a basic Stage 1 setup into a full NexGen Stage 2+ Flex Fuel configuration. This upgrade unlocks the performance advantages of ethanol-blended fuels while improving airflow, reducing system restriction, and enabling the advanced logic of COBB’s NexGen Flex Fuel tuning. The Black finish offers a clean, factory-plus appearance that complements any engine bay.

KEY FEATURES

• Upgrades a Stage 1 Subaru STI to full NexGen Stage 2+ Flex Fuel capability
• Supports E85 and blended ethanol fuels for increased knock resistance and tuning flexibility
• Improves airflow efficiency to enhance turbo response and overall engine performance
• Integrates seamlessly with COBB NexGen OTS Flex Fuel mapping and tuning strategies
• Black-finished components provide a sleek, cohesive under-hood appearance
• Designed to build a strong and reliable foundation for future performance enhancements
• Direct-fit installation engineered for OEM-like precision

TECHNICAL SPECIFICATIONS

• Platform Compatibility: Subaru STI 2008–2014
• Upgrade Type: Stage 1 to NexGen Stage 2+ Flex Fuel hardware transition
• Fuel Support: Pump gas, E85, and blended ethanol mixtures
• Tuning Requirement: COBB NexGen OTS Flex Fuel maps or custom NexGen calibration
• System Benefits: Improved combustion stability, broader tuning range, and increased power potential
• Included Components: Hardware required to complete the NexGen Stage 2+ Flex Fuel upgrade path
• Application: High-performance street and track builds seeking ethanol capability

VEHICLE FITMENT

• Subaru STI 2008–2014

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