E85 Flex Fuel Kit

The SiriMoto E85 Ethanol Flex Fuel Sensor Kit is a performance enhancement for the 8th Gen Honda Civic Si and Mugen Si (2006-2011). This system integrates a sensor into your fuel lines to read ethanol content, sending a processed signal to your ECU for use by a compatible tuning device. This enables your Civic to utilize higher concentrations of ethanol, such as E85, which can be blended with regular gasoline in any ratio. It includes a gauge pod for an Innovate digital gauge to monitor E85 percentage. This flex fuel kit offers substantial benefits, including significant increases in horsepower and torque, faster turbo spool-up, and cooler engine operation. It allows the ECU to dynamically adjust the engine's tune based on the current ethanol percentage, ensuring optimal performance whether you are running pure E85 or a blend. The components are selected for reliability, including Tefzel wiring, a Deutsch connector, and a flame-retardant nylon sleeve, all housed within a sturdy bracket. **Important Considerations:** This product requires a red Hondata FlashPro (race version) and will not function with the blue CARB Compliant/Exempt FlashPro. While it is compatible with other tuning solutions, the Hondata interface is specifically mentioned for its dynamic recalibration capabilities. Additionally, it is crucial to note that stock fuel injectors do not flow enough fuel to support E85; higher-flowing injectors (like the optional SiriMoto EV14 550cc) are necessary. For naturally aspirated vehicles, the stock fuel pump may suffice for E85 use, but long-term operation can shorten its lifespan due to ethanol's corrosive nature, making an upgraded fuel pump recommended for continuous E85 use. This kit is intended for off-highway or formally sanctioned race use only and is not legal for use on public streets.