A method and system for generating a torque map operating a vehicle's all-wheel drive (“AWD”) system are disclosed. A model describing how an all-wheel drive (“AWD”) electronic control unit (“ECU”) included in the vehicle processes data received from one or more sensors or vehicle subsystems is generated and executed on a computing device so that the computing device emulates operation of the AWD ECU. The computing device captures data from a controller area network (“CAN”) included in the vehicle and data from the vehicle describing wheel torque while emulating operation of the AWD ECU. A raw torque value is generated by the computing device from the data from the CAN and wheel torque. The raw torque value is used to generate a torque value associated with an engine speed and with an intake air pressure obtained from the data captured from the CAN.