This IBR Flex Fuel Sensor Kit is a great addition for 2008 - 2021 Subaru STI and WRX models. It's compatible with all fuel management systems, but remember, your car needs a specific tune to run on flex fuel. And it doesn't work with the Cobb Greenspeed Update. The kit lets you log and monitor the ethanol content in your fuel, which is super useful. Our unique controller creates its own 12V power supply for the sensor, cutting down on wiring and installation time while boosting reliability. It also references the ECU 5V power correctly for accurate data. We've included hose assemblies for both the 2008+ STi and WRX in one kit, making ordering easier. There's also a custom wiring harness that can be detached from the controller for easy troubleshooting. Since your car only has two TGV plugs for inputs, you can't run the Secondary Injection Controller, Flex Fuel Sensor, and Fuel Pressure Sensor kits all at once. You can only use a maximum of two of these three items. The SIC can be wired for power only, but you'll need a custom harness. Key features include a replaceable wiring harness (sold separately), automotive - grade wiring, no need for a 12V supply from the rear O2 sensor (a common weak point), top - down installation so you don't have to crawl under the car, an accurately referenced analog output from the ECU 5V, and a potted housing with a solid pin connector for long - lasting durability. The kit includes a Continental Flex Fuel Sensor, a Flex Fuel Sensor Bracket, a Flex Fuel Sensor Controller, a Wiring Harness, and Fuel Lines that fit both the 08 - 21 STi and 08 - 21 WRX.
Using this IBR Flex Fuel Sensor Kit is straightforward. First, make sure your 2008 - 2021 Subaru WRX or STI is tuned for flex fuel. Installation can be done from the top of the car, so you don't have to get under it. Connect the included fuel lines to your vehicle, ensuring they fit properly for your specific model (either 08 - 21 STi or 08 - 21 WRX). Then, attach the wiring harness to the controller and the relevant parts of your car. Remember, you can only use a maximum of two out of the Secondary Injection Controller, Flex Fuel Sensor, and Fuel Pressure Sensor kits at the same time. If you want to use all three, you'll need to wire the SIC for power only and make a custom harness. As for maintenance, check the wiring regularly for any signs of wear or damage. Since the wiring harness is replaceable (sold separately), you can easily swap it out if needed. The potted housing with a solid pin connector is very durable, but keep an eye on it to ensure it remains in good condition. Also, always follow the standard maintenance schedule for your Subaru to keep the sensor working accurately.
