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| Description: Exhaust system back pressure can be measured directly by installing a pressure gauge into an exhaust opening. This can be accomplished in one of the following ways: - With an oxygen sensor. - With the exhaust gas recirculation (EGR) valve. - With the air-injection reaction (AIR) check valve. Picture Stats: Views: 307 Filesize: 402.76kB Height: 300 Width: 638 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=35925 |