CNG Sequential system uses the multipoint sequential injection technology: the injectors, controlled by the ECU, enter the gas into each cylinder and strictly replicate what happens during petrol operations. Kit consists of CNG Sequential Reducer Model S9000, Injector Rail , ECU Kit- (ECU, Wiring Harness, Map Sensor, Temperature Sensor, Switch), Low Pressure Gas FIlter, Pressure Gauge, CNG Steel PIpe, Rubber Hoses and Fitting Accessories