KTuner Connectivity Device for 2025+ Honda Civic Si

This device allows flash your 2025 Honda Civic Si ECU.
Please note that this kit does not work with the Hondata FlashPro.

BEFORE PURCHASING, YOU MUST:
- Enter your full KTuner serial number (found on the box or unit)
- Lock your KTuner device to your ECU (can be completed without this kit)

Please see our full install tutorial here, or see the below videos.

** DOES NOT WORK WITH HONDATA FLASHPRO **