STAG GAS COMPUTER is revelatory tool allowing to manage fuelconsumption in cars equipped with newest STAG LPG system. Togetherwith GPS enabled in mobile phone, driver is able to watch fuelconsumption (momentary and average), measure fuel already spent andthen calculate related costs. STAG GAS COMPUTER is also LPG systemparameters and malfunction view. It gives access to on-boarddiagnostic features (OBD-II/EOBD). Application supports onlyQ-generation STAG controllers including STAG-4 QBOX, STAG-4 QNEXTand STAG-300 QMAX. In order to start using GAS COMPUTER applicationSTAG BLUETOOTH NEXT interface is strongly recommended.