Fitment: 2015 - 2018 Subaru STI. This COBB Tuning package is a cost - effective choice. It's designed for 15 - 18 STIs to re - establish upgrade paths after downpipe removal, offering great performance while meeting legal emissions. Ideal if you own a COBB Stage 1 package and want to upgrade to NexGen Stage 2+ Flex Fuel. Tuning is required. Package includes SF Intake System (blue hose), Airbox, Silicone Turbo Inlet V2, Throttle Body Coupler, Spark Plugs, 1050x Fuel Injectors, AEM High Flow Fuel Pump, Fuel Pressure Regulator, Fuel Rail Line Kit, Fuel Rails, NexGen Flex Fuel Ethanol Sensor Kit, Fuel Pressure Sensor Kit, and COBB Vehicle Badge. The intake has a composite body for heat rejection, integrated velocity stack and airflow straighteners, and a 4 - ply steel - reinforced silicone post - MAF. The airbox is made of 16 - gauge aluminum, uses the factory snorkel, and has OEM - quality fit. Injectors have a nominal flow rate of 1065cc/min at 43.5psi and are well - matched. 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. The turbo inlet and throttle body coupler are made of silicone, offering performance improvements. The NexGen Flex Fuel Ethanol Sensor Kit and Fuel Pressure Sensor Kit are plug - and - play for easy use. WARNING: (http://www.p65warnings.ca.gov)
Using this COBB Tuning upgrade package is a great way to enhance your 2015 - 2018 Subaru STI's performance. First, make sure you have the necessary tools and a safe workspace. Since tuning is required, you'll need to use appropriate tuning software. Install each component following the included instructions. For example, when installing the intake system, ensure all connections are secure. The airbox should be properly attached to the factory snorkel. When dealing with fuel - related components like injectors, fuel rails, and pumps, be extra careful as they handle flammable substances. Note that this package is designed specifically for the 2015 - 2018 Subaru STI, so don't try to use it on other models. To maintain your upgrade, regularly check all connections for tightness. Inspect the intake for any signs of damage or blockage. For the fuel system, keep an eye on the fuel pressure sensor and replace fuel filters as recommended. If you notice any strange noises or a decrease in performance, it could be a sign of a problem, so get it checked out right away.
