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COBB Tuning Flex Fuel Ethanol Sensor Kit 3 Pin

MODEL # COB312550


  • Q: Cobb flex fuel kit.  04STI5 months ago

    Is there anything else I need to buy with this flex fuel kit? Besides fuel injector, fuel pump and tune? Is it a complete plug in and play kit???
  • Q: Fuel pump / injectors  502sti1 year ago

    Will this run on stock fuel pump and injectors? If not what would you recommend? Future power goals are in the low 500s if that helps.
    • 1 of 1 people found the following answer helpful

      A:  You'll want to upgrade the injectors and fuel pump before you install this. Running ethanol will max out stock injectors very, very easily. If you're going over 500whp with ethanol, you'll want to run 1700cc injectors at a minimum. For the fuel pump, consult your tuner, but you may need explore options like running multiple pumps or a surge tank.

      Marcus E. @ RallySport Direct 1 year ago  
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  • Q: after tune  Steve2 years ago

    if i got a tune on e85 and then got this kit in the future (after tune), would i need to retune it or would it just adjust my custom map parameters accordingly on its own?
    • 0 of 0 people found the following answer helpful

      A:  Your tuner could probably just tweek the current map that you would have for the E-85 but that would be something you would need to discuss with him. You WILL need a retune after installation of this kit.

      Tyler A. @ RallySport Direct 2 years ago  
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  • Q: True FlexFuel?  BananaSammiches2 years ago

    Just to clarify, once and installed and properly tuned, will this enable me to run my car as a true FlexFuel vehicle? That is to say, will I be able to switch back and forth between gasoline and ethanol without changing maps?
    • 1 of 2 people found the following answer helpful

      A:  No. You will need to change maps if you are going to be running just gasoline, pure ethanol and if you are running a mix. Each will require a different map that you will need to switch to.

      Tyler A. @ RallySport Direct 2 years ago  
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