Cobb Stage 1 to NexGen Stage 2 Flex Fuel Power Package Subaru STI 19-21 - Black SF Hose | SUB004NG2S2FF-S1-UP-BK

This COBB Stage 1 to NexGen Stage 2 + Flex Fuel Power Package is a cost - effective upgrade for your 2019 - 2021 Subaru STI and 2018 Subaru STI Type RA. With the removal of downpipes, NexGen Power Packages redefine the upgrade path while meeting legal emissions standards. If you already own a COBB Stage 1 kit, this is the perfect next step. **Key Features**: - SF Intake System with black hose for better heat rejection and audible engine sounds. - Airbox made of 16 - gauge aluminum, using the factory snorkel to draw in cold air without water ingestion issues. - High - quality components like silicone turbo inlet, throttle body coupler, spark plugs, and more. - A complete fuel system including high - flow fuel pump, injectors, fuel rails, and sensors for accurate fuel delivery. **Please Note**: Tuning is required for this package.

Using this COBB power package is straightforward. First, make sure you have all the parts in the package, including the intake system, airbox, fuel components, and sensors. When installing, follow the installation guides provided with each part. For example, the fuel pressure regulator and turbo inlet come with their own guides. Note that tuning is necessary for this package to work properly. You'll need to use the Accesstuner Software with the data provided for the injectors. For maintenance, regularly check the air filter in the intake system and clean or replace it as needed. Inspect the fuel lines for any signs of wear or leaks, and make sure all connections are tight. The spark plugs should be replaced according to the manufacturer's recommendations. This will help keep your Subaru STI running smoothly and efficiently with the upgraded power package.