4th Gerneration CNG/LPG ECU kit for 4 cylinders car ,,LPG conversion kit,CNG conversion kit, SYP CNG/LPG ECU kit for 4 cylinders ... car ,, Used in Sequention injection system for 4 cylinder ... Gas temperature , Pressure sensor and Map Senor. Gas ECU will work with petrol ECU to automatic manage the EFI engine parameter . Sequential ...