COBB NexGen Stage 2+ Flex Fuel Power Package Black (SUB004NG2S1FF-BK) | Subaru STI 2015-2018

The COBB NexGen Stage 2+ Flex Fuel Power Package Black (SUB004NG2S1FF-BK) equips 2015–2018 Subaru STI models with the hardware required to experience NexGen Stage 2+ performance while enabling the advantages of ethanol-blended fueling. By improving airflow, reducing restriction, and activating Flex Fuel capability, this package delivers stronger knock resistance, smoother boost behavior, and expanded tuning versatility when paired with COBB’s NexGen calibrations.

KEY FEATURES

• Complete NexGen Stage 2+ Flex Fuel hardware package for 2015–2018 Subaru STI
• Supports E85 and blended ethanol fuels with NexGen Flex Fuel tuning
• Enhances airflow and turbocharger efficiency for improved power potential
• Black component finish provides a clean, cohesive under-hood aesthetic
• Delivers smoother torque delivery and reduced knock sensitivity
• Compatible with COBB NexGen Stage 2+ Flex Fuel OTS maps and custom tuning
• Engineered for OEM-like fitment and long-term durability

TECHNICAL SPECIFICATIONS

• Platform Compatibility: Subaru STI 2015–2018
• Package Level: NexGen Stage 2+ with Flex Fuel capability
• Fuel Support: E85, pump gas, and blended ethanol mixtures
• Tuning Requirement: COBB NexGen Stage 2+ Flex Fuel OTS map or custom NexGen calibration
• Performance Benefits: Improved combustion stability, expanded tuning range, enhanced turbo response
• Included Components: Hardware required for NexGen Stage 2+ Flex Fuel operation
• Application: High-performance street and track builds seeking ethanol-based power gains

VEHICLE FITMENT

• Subaru STI 2015–2018

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