Nothing really explains that you need this kit, but if you have a 2025+, youll need this. Worked effortlessly on my 2026 civic si. Kept getting a 12th port OBD issue on my ktuner app when trying to flash, but once i figured out it was because i needed this tool, it made it so easy.
Very noticeable gains after this install. The size comparison alone is insane. Worth every penny! Can’t wait to get a tune revision to get even more out of it!
Fills out the extra space that the oem doesn't. Comes with new o-rings and rubber guide strips. Beautiful piece.
