This COBB Stage 1+ to NexGen Stage 2+ Flex Fuel Power Package is an amazing value - for - money upgrade! It's specifically designed for 2008 - 2021 Subaru STI and 2018 Subaru STI Type RA. NexGen Power Packages are great solutions for vehicles affected by downpipe removal, offering similar performance and excitement while meeting legal emissions standards.
Package Includes:
- Silicone Turbo Inlet V2: 6 - ply silicone in stealth black, larger diameter for more air flow, increases horsepower, reduces turbo spool time, and improves throttle response. It's a direct OEM replacement for turbochargers with 2.4' inlet, but tuning is required.
- Throttle Body Coupler: 4 - ply silicone in stealth black with a pad - printed COBB logo. It's a drop - in replacement that works with stock or aftermarket top - mount intercoolers.
- Spark Plugs: Feature a laser - welded iridium - tipped center electrode, trivalent metal plating, and a.024 (.6mm) gap. Heat range is 7, and a set of 4 is included.
- Top Feed 1050x Fuel Injectors: Work with the stock fuel rail, have a nominal flow rate of 1065cc/min @ 43.5psi, and are matched sets with less than 1% dynamic flow rate variance. They come with data for tuning with Accesstuner Software.
- AEM 340LPH High Flow Fuel Pump: Tested at 340lph @ 40psi, compact in size, and compatible with ethanol fuels up to E100, methanol fuels up to M100, and all types of gasoline.
- Fuel Pressure Regulator for Fuel Rail Kit: An OEM Subaru part, plug - and - play with COBB fuel rails and lines, ethanol - compatible, and has abrasion - resistant sheathing. Tuning is required.
- Fuel Rail Line Kit: Made of stainless braided PTFE line, can handle up to 2500psi operating pressure, with double swivel - 6 AN hose ends. It's SAE 30R9 certified and plug - and - play with the COBB fuel rail kit.
- Fuel Rails: CNC machined from 6061 billet aluminum, with a black anodized finish and a laser - etched COBB logo. They have pre - installed - 8 AN to - 6 AN fittings, are compatible with Injector Dynamics fuel injectors, and allow parallel fuel delivery.
- NexGen Flex Fuel Ethanol Sensor Kit: Consists of a NexGen Flex Fuel Module, a plug - and - play wiring harness, and an ethanol content sensor with a bracket.
- Fuel Pressure Sensor Kit (5 Pin): Comes with OEM quality connectors, a billet aluminum sensor adapter, a 0 - 100 PSI sensor, and is required for COBB NexGen Flex Fuel OTS Maps.
- COBB Vehicle Badge: Adds a cool touch to your Subaru.
If you already own a COBB Stage 1+ Power Package, this is the perfect upgrade to the NexGen Stage 2+ Flex Fuel Power Package.
Using this COBB Flex Fuel Power Package Upgrade:
1. First, make sure you have the right tools for installation. You can refer to the installation guides that come with the fuel rail lines, fuel pressure regulator, fuel rails, turbo inlet, and throttle body coupler.
2. Start by removing the old parts that are being replaced. For example, when replacing the turbo inlet, be careful as it's a direct OEM replacement. You'll need to do some tuning after installation.
3. Install each component in the order they are included in the package. Connect the fuel lines, install the injectors, and mount the sensors properly.
Note:
- Tuning is required for some components like the turbo inlet and fuel pressure regulator. Make sure you have the right software or consult a professional tuner.
- The AEM fuel pump is compatible with different types of fuels, but always check your local fuel regulations.
- The spark plugs have a specific gap and heat range, so don't try to modify them.
Maintenance:
- Regularly check the fuel lines for any signs of wear or leaks. The stainless - braided PTFE lines are durable, but it's still a good idea to inspect them.
- Clean the sensors from time to time to ensure accurate readings. The fuel pressure sensor and ethanol content sensor are important for the proper functioning of the flex - fuel system.
- Replace the spark plugs as recommended by the manufacturer to maintain optimal engine performance.
