Plug and -Pins Only – Flex Fuel Composition Sensor by Haltech Haltech has been at the cutting edge of engine management technology since it first opened its doors in 1986. Today, Haltech ECUs are sold in over 50 countries around the world. They are the driving force behind many record-setting race vehicles. Features Suits flex fuel composition sensor Please Note: This sensor output must be wired to a Digital input (SPI or DPI) Applications Universal What’s In The Box? 1 – Plug 3 – Pin Warranty Haltech Limited Warranty