This I Build Race Cars FLX01 Flex Fuel Upgrade Kit is a game - changer for Subaru owners. It fits a wide range of models including the 2002 - 2005 WRX, 2004 - 2006 STi, 2004 - 2008 Forester XT, 2005 - 2006 Legacy GT, and 2005 - 2006 Outback XT. Our unique controller generates its own 12V power for the sensor, cutting down on wiring, installation time, and boosting reliability. It also references the ECU 5V power accurately, providing consistent and precise data on ethanol content. You get hose assemblies for both 08 - 21 STi and WRX in one kit, eliminating order - related confusion. The detachable custom wiring harness simplifies troubleshooting and repairs. Since your car has only two TGV plugs for inputs, you can run a maximum of two out of the Secondary Injection Controller, Flex Fuel Sensor, and Fuel Pressure Sensor kits. The SIC can be wired for power only, but you'll need a custom harness. This upgrade is perfect for those with unreliable flex - fuel systems or those planning a custom fuel setup. It features a replaceable automotive - grade wiring harness, no need for a 12V supply from the rear O2 sensor (a common failure point), top - side installation, accurate ECU 5V referenced analog output, a durable potted housing with a solid pin connector, and it requires tuning for flex - fuel operation. The kit includes a Flex Fuel Sensor Controller, a 3 - Pin TGV Plug/Wiring Harness, and mounting hardware. Note that it doesn't work with the latest tuning software changes, and your car must be pre - tuned for flex - fuel. If you're just replacing another brand of flex - fuel controller, retuning might not be necessary. Don't mount the controller directly on the intake manifold and read the installation instructions carefully before you start.
Using this I Build Race Cars FLX01 Flex Fuel Upgrade Kit is straightforward. First, make sure your car is one of the compatible models like the 2002 - 2005 WRX or 2004 - 2006 STi. Before installation, read the instructions thoroughly. The installation can be done from the top, so you don't have to crawl under the car. The kit comes with a Flex Fuel Sensor Controller, a 3 - Pin TGV Plug/Wiring Harness, and mounting hardware. Just follow the steps to connect everything properly. Remember, since your car has only two TGV plugs for inputs, you can run a maximum of two out of the Secondary Injection Controller, Flex Fuel Sensor, and Fuel Pressure Sensor kits. 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, keep an eye on the wiring harness. It's replaceable and made of automotive - grade wiring, so it should last a long time. Also, ensure the controller is not mounted directly on the intake manifold. And don't forget, your car must be tuned specifically to run flex fuel. If you're replacing another brand of flex - fuel controller, you might not need to retune your car, but it's always a good idea to double - check. If you have any issues, the detachable custom wiring harness makes troubleshooting and repairs easy.
