Three-way catalytic converter (TWC) mission is to reduce the emissions of CO, HC and NOX. But if the poor condition of the vehicle, such as CO value of discharge of more than 1%, then effective TWC can not do anything. So before checking TWC performance, we must first measure the content of vehicle exhaust CO, HC and O2 with exhaust gas analyzer. To determine the concentration of the mixture is appropriate, in order to conduct performance testing if appropriate TWC's. In measuring exhaust when the first disengaging TWC intake. Run the engine up to normal temperature, the measuring tube inserted into the exhaust pipe at least 400mm. Measured according to the idle speed. (Note: The test should be completed within 3min). If the measured value is not normal should be access to the engine performance. Until a value within the specified range. Value to be normal, refitted TWC intake. TWC detection performance in the engine temperature normal. Wuhan Connaught Trade Co., Ltd. is China National Materials Germany Connaught lubricants and Johnson & Johnson architectural glass membrane Hubei only designated agents. China National Materials Company will promise the lubricating oil to China, access to Mercedes-Benz, Volkswagen, BMW, Porsche factory certification, from the German "blood" technology from the track. Contact: Lee