LAUNCH MCU3 Adapter Board Kit work with X-PROG 3 for PRO V4.0/ X431 V+/ PRO 5. Original LAUNCH X431 PC Adaptor Tool Engine Data Validation work with X-PROG 3. Launch X431 smart k-e-y simulator is designed to collect the data sent from the ignition coil, aiming to identify the ignition coil troubles and decode the data of the vehicle k-e-y chip.