Work done by Android:
The data received from the Bluetooth Module is displayed on-screen. This data is also bundled up and sent to PHP servers

     Sensors
        Performance Monitoring
        *MAP Sensor,CKP Sensor
        *Speedometer Sensor,TP Sensor
        *AC Switch,Brake Switch
        *CNG Switch
        *Coolant Temperature Sensor
        *CO Sensor,SO2 Sensor

     Pollution Sensors
        *CO Sensor
        *SO2 Sensor
        *Methane Sensor
        *O2 Sensor

MAP Sensor
MAP stands for Manifold Absolute Pressure. The Manifold Absolute Pressure Sensor  (MAP Sensor) is one of the sensors used in an internal combustion engine's electronic control system.