Cobb Stage 1 to NexGen Stage 2 Flex Fuel Upgrade Subaru STI 15-18 - Black SF Hose | SUB004NG2S1FF-S1-UP-BK

Fitment: 2015 - 2018 Subaru STI. This is an amazing value package! The COBB Tuning Stage 1 to NexGen Stage 2+ Flex Fuel Power Package for your 15 - 18 STI is designed to re - establish upgrade paths for vehicles affected by downpipe removal. It offers great performance while meeting legal emissions. Choose this if you own a COBB Stage 1 Power Package and want to upgrade. Note: Tuning is required. Package includes SF Intake System, Silicone Turbo Inlet V2, Throttle Body Coupler, Spark Plugs, and more. The intake has a composite body for heat rejection and an integrated velocity stack. The air box is made of 16 - gauge aluminum and uses the factory snorkel. Injectors have a nominal flow rate of 1065cc/min @ 43.5psi. Fuel rail lines are stainless braided PTFE with high - pressure capacity. The fuel pressure regulator is ethanol - compatible and plug - and - play. Fuel rails are CNC machined from 6061 billet aluminum. Turbo inlet and throttle body coupler are made of high - quality silicone. The NexGen Flex Fuel Ethanol Sensor Kit and Fuel Pressure Sensor Kit are plug - and - play. WARNING: (http://www.p65warnings.ca.gov)

Using this upgrade kit is straightforward. First, make sure your vehicle is a 2015 - 2018 Subaru STI. If you already have a COBB Stage 1 Power Package, you're good to go for this upgrade. Remember, tuning is required after installation. When installing the components, follow the instructions carefully. For the intake and air box, ensure proper connections to avoid air leaks. The injectors, fuel rail lines, and pressure regulator should be installed according to the provided guidelines. The turbo inlet and throttle body coupler are direct replacements, so just swap them out. The NexGen Flex Fuel Ethanol Sensor Kit and Fuel Pressure Sensor Kit are plug - and - play, making installation easy. As for maintenance, regularly check the intake for any dirt or debris. Inspect the silicone components for signs of wear or damage. Keep an eye on the fuel system and monitor the fuel pressure using the sensor kit. If you notice any issues, refer to the troubleshooting section in the manual or contact COBB Tuning support.