2016+ Honda Civic 1.5T Plug ‘N Play Flex Fuel Kit Install Guide

The final connection can be accessed two ways. From the top, or by jacking up the car and removing the plastic shielding to access the ECT2 connection. We chose to show how to do it without jacking up the car. This way requires that the plastic shroud to be removed with the plastic clips (Holes shown already removed clips)

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Remove the Rubber line from the holder on the metal shroud.

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Pry the small rubber nipple out of the metal shroud to release it.

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Remove the 10mm bolts behind the metal shroud

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Pull the tabs up to release the metal shroud

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Remove the metal hard-line from the white holder on the back side of the metal shroud (passenger side)

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Lift and pull the metal shroud towards the valve cover and release it from the tabs lifted up in the previous steps

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Ensure the plastic rectangular piece on the drivers side is removed before pulling the metal shroud completely out.

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Remove the secondary holder underneath the shroud on the line removed from the holder earlier.

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Protect your valve cover and set the metal shroud on top.

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Reach down to release the 1-wire ECT2 connection from the rad

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The single prong ECT2 clip that will be plugging into the rad

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Run the line over the hot side charge pipe silicone and into the rad where you removed the factory plug from

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The factory clip can hang free or we suggest sealing it to protect against elements.

Feel free to cut the excess tabs of the zipties off towards the end of the install for a clean look.

Please be sure to have P2185 (Secondary ECT), P0128, and P0138/P0139 (O2 slow response) codes disabled on your KTuner or Hondata software. Our kit pulls power from the secondary o2 sensor and utilizes the ECT2 output. Enable flex fuel tables which can often be found in the advanced features section.

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