Custom Flex Fuel Harness

Custom Flex Fuel Harness

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This custom harness will allow you to use your own parts for your own Flex Fuel project. Works with GM Flex Fuel sensors which work by sensing the ethanol content of the fuel being delivered to the engine, which allows the vehicles computer to adjust the tune accordingly for maximum performance with the given fuel. This happens via real time communication to ECU, so it is a seamless adjustment with no user action or input required. This kit is assembled with OEM style connectors, professional wire crimping, and high quality Tefzel ETFE wire.  

Kit includes:

  • Plug-and-Play Wiring Harness with no splicing required
  • Easy to follow installation instructions w/ colored pictures


*Custom tuning is required to activate the flex fuel capability, and is always recommended for maximum performance and reliability*