COBB NexGen Stage 2+ Flex Fuel Power Package w/ Black Intake | Subaru STI (15-18) (SUB004NG2S1FF-BK)

Name: COBB NexGen Stage 2+ Flex Fuel Power Package w/ Black Intake | Subaru STI (15-18) (SUB004NG2S1FF-BK)
Brand: COBB
Price: 4415.0 USD
Availability: InStock

SKU:SUB004NG2S1FF-BK

In stock

$4,415.00 USD

~~$4,415.00 USD~~ $4,415.00 USD

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▶ Vehicle Fitments

Year	Make	Model
2014 - 2021	Subaru	WRX STI

The COBB NexGen Stage 2+ Flex Fuel Power Package with Black Intake for 2015–2018 Subaru STI is a comprehensive performance upgrade kit designed to enhance power and fuel flexibility. This package includes the Subaru Accessport V3 (AP3-SUB-004), SF Intake and Airbox, Silicone Turbo Inlet V2, Throttle Body Coupler, upgraded Spark Plugs, Top Feed 1050cc Fuel Injectors, High Flow Fuel Pump, Fuel Pressure Regulator, Fuel Rail Line Kit, Fuel Rails, NexGen Flex Fuel Ethanol Sensor Kit, Fuel Pressure Sensor Kit, and a COBB Vehicle Badge. Engineered to optimize fuel delivery and intake efficiency, this kit supports flex fuel use and delivers improved throttle response, increased horsepower, and reliable fuel management for high-performance applications.

This power package is specifically designed for 2015 to 2018 Subaru WRX STI models, providing a direct bolt-on upgrade path for enthusiasts seeking enhanced street and track performance. The included components ensure compatibility with the factory fuel system while enabling ethanol fuel blends for greater tuning flexibility. Installation involves replacing stock intake and fuel system parts with the supplied high-quality components, making it suitable for daily driving and competitive use. This kit is ideal for drivers looking to maximize power output while maintaining reliability and drivability on both pump and flex fuels.

Overview

COBB NexGen Stage 2 + Flex Fuel Power Package w/ Black Intake

Fitment: 2015-2018 Subaru WRX STI

Part #: SUB004NG2S1FF-BK

Overview

The COBB NexGen Stage 2 + Flex Fuel Power Package with Black Intake is a comprehensive performance drivetrain upgrade designed specifically for the 2015-2018 Subaru WRX STI. This all-in-one kit is intended for enthusiasts seeking a balanced combination of power, fuel flexibility, and enhanced engine response. It supports flex fuel capability, allowing your vehicle to adapt to varying ethanol blends for optimized performance and efficiency.

Ideal for drivers who want to elevate their STI’s power delivery while maintaining reliability, this package includes everything needed to upgrade fueling, intake, and engine management. The black intake system not only improves airflow but also adds a sleek, aggressive look under the hood.

Key Features

This power package offers a complete solution with carefully selected components to support higher power levels and flexible fueling:

Subaru Accessport V3 (AP3-SUB-004) for advanced tuning and monitoring
SF Intake & Airbox designed to increase airflow and throttle response
Silicone Turbo Inlet V2 and Throttle Body Coupler for improved boost delivery
Upgraded Spark Plugs optimized for enhanced combustion
Top Feed 1050x Fuel Injectors and High Flow Fuel Pump to support increased fueling demands
Fuel Pressure Regulator, Fuel Rail Line Kit, and Fuel Rails for precise fuel delivery and system integrity
NexGen Flex Fuel Ethanol Sensor Kit and Fuel Pressure Sensor Kit for accurate fuel composition and pressure monitoring
COBB Vehicle Badge included as a finishing touch

Installation & Fitment

This package is designed for direct fitment on 2015-2018 Subaru WRX STI models. Installation requires moderate mechanical knowledge and access to tuning software via the included Accessport. Fitment should be verified against your vehicle’s specifications and the part number to ensure compatibility.

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