This I Build Race Cars FLX01 Flex Fuel Upgrade Kit is a game - changer for Subaru owners. It fits multiple Subaru models, including the 2007 - 2021 STi, 2008 - 2014 WRX, 2007 - 2012 Legacy GT, 2007 - 2009 Outback XT, and 2009 - 2013 Forester XT. This kit allows you to data log and monitor the ethanol content of fuel on most new Subaru vehicles. Its proprietary controller creates its own 12V supply to power the sensor, reducing wiring, installation time, and improving reliability. It also properly references the ECU 5V power for accurate data. With hose assemblies for both the 08 - 21 STi and WRX in one kit, it simplifies the ordering process. The custom wiring harness can be detached from the controller for easy troubleshooting and repairs. Note that due to the car's limited TGV plugs, you can run a maximum of two out of the Secondary Injection Controller, Flex Fuel Sensor, and Fuel Pressure Sensor kits at once. The SIC can be wired for power only with a custom harness. This upgrade is ideal for those with unreliable or failed flex fuel systems and those planning a custom fuel system. It comes with a replaceable wiring harness using automotive - grade wiring, doesn't need a 12V supply from the rear O2 sensor (a common failure point), can be installed from the top without crawling under the car, has a properly referenced analog output for better accuracy, a potted housing with a solid pin connector for durability, and requires tuning for flex fuel. The kit includes a Flex Fuel Sensor Controller, a 5 Pin TGV Plug/Wiring Harness, and hardware for mounting the controller. It works with all fuel management systems, but the car must be tuned for flex fuel. It may not work with the latest tuning software changes. Retuning may not be needed when replacing another brand of flex fuel controller. Don't mount the controller directly on the intake manifold and read the installation instructions carefully before installing.
Using this I Build Race Cars FLX01 Flex Fuel Upgrade Kit is straightforward. First, make sure your Subaru vehicle is one of the compatible models like the STi from 2007 - 2021, WRX from 2008 - 2014, etc. Before installation, read the instructions thoroughly. Don't mount the controller directly on the intake manifold. The installation can be done from the top, so you don't have to crawl under the car. Connect the wiring harness and use the included hardware to mount the controller. Remember, you can run a maximum of two out of the Secondary Injection Controller, Flex Fuel Sensor, and Fuel Pressure Sensor kits at once. If you want to use all three, you'll need to wire the SIC for power only with a custom harness. After installation, ensure your car is tuned specifically to run flex fuel. This kit works with all fuel management systems, but it may not be compatible with the latest tuning software changes. When it comes to maintenance, the replaceable wiring harness made of automotive - grade wiring ensures long - term reliability. If you need to troubleshoot or make repairs, you can easily detach the custom wiring harness from the controller. Also, since it doesn't rely on a 12V supply from the rear O2 sensor (a common failure point), you'll likely experience fewer issues over time.
