... kitsFeatures:1.Applying to 3-cylinders, 4-cylinders, 5-cylinders, 6-cylinders and 8-cylinders engine, it can make communication with the ... as engine working and control gas injection dosage with the relation to the engine's RPMS4. ... correction function, precisely correct injection time through comparing with oil curve and gas curve. Keep the ... switch. CNG/LPG ECU kit (AC 300) for sequential system