4 cylinder,YXGAS,CNG injection ECU ( cng/lpg injection system, conversion kits) 4 cylinder,YXGAS,CNG injection ECU 1. CNG sequential system 2. CNG fuel ECU 3. Suitable ... sensorD.Water Temperature SensorsE. CNG gas Temperature Sensors ( cng/lpg injection system, conversion kits)4 cylinder,YXGAS,CNG ...