STAG300,CNG/LPG injection system kits(Poland)(cng fuel auto,cng regulator,cng mixer,ECU,switch) STAG300, ... sensor, gas temperature sensor signal, gas pressure sensor signal, sensor crank shaft position sensor signal, then do the analysis processing, and ... engine emission standards, such as EU2, EU3, EU4 and over. (Poland)(cng fuel auto,cng regulator,cng mixer,ECU,switch)STAG300 ...