This harness kit will allow you to convert your 12-14 9th gen Si Civic to work with first gen K-series engines and 8th gen Si ECU. Along with this harness kit you will need
- 06-11 8th gen Si engine harness and charge harness
- 06-11 8th gen Si OEM O2 sensor
- 06-11 8th gen Si ECU
** this jumper harness kit is intended for performance/track applications not cars that need all accessories to work. Using an 8th generation ECU in a 9th gen will give you CAN communication errors that will result in some accessories like cruise control and AC not functioning. The Speedo and tach DO function and work. **
You will need to check and verify emissions rules and laws in your state for compatibility. These kits are intended for off-road use only.