KTuner is for off-road research and development testing only. Every vehicle should be flashed back to factory before being driven on a public road.
Part numbers for usable ECUs include:
AT
37820-RL8-A51 through A54
37820-RL8-A71 through A74
KTuner feature matrix for 10-14 TSX (BETA means the feature is currently in testing phases):
| Feature | Final | BETA | End User | Dealer Tuning | Reflash | |
| Real-Time Logging | X | X | X | |||
| Real-Time Tuning Mode | X | X | ||||
| Ignition/Fuel Tuning | X | X | X | X | ||
| Knock Tuning | X | X | X | X | ||
| Rev Limiter Settings | X | X | X | X | ||
| 2-Step Settings | X | X | X | X | ||
| VTEC Window Control | X | X | X | X | ||
| Closed Loop Control | X | X | X | X | ||
| Disable Sensors | X | X | X | X | ||
| Fuel Cut Parameters | X | X | X | X | ||
| Fuel Correction Parameters | X | X | X | X | ||
| Ignition Correction Parameters | X | X | X | X | ||
| Idle Control Parameters | X | X | X | X |
Speed Limiter removed. Please adhere to your tire speed limitations and note this feature is for off-road use only.