... injection system kits(Poland)(cng fuel auto,cng regulator,cng mixer,ECU,switch) STAG300,CNG/LPG injection system kits ... main components for the burning gas system,through collecting the fuel signal of the ECU control module ... valve, when the engine stopped the gas system will be cut off automatically. It can ... , EU3, EU4 and over. (Poland)(cng fuel auto,cng regulator,cng mixer,ECU,switch)STAG300,CNG ...