What doesis the egr on a 2000 Hyundai Elantra do?

The EGR (Exhaust Gas Recirculation) system on a 2000 Hyundai Elantra helps reduce nitrogen oxide (NOx) emissions by recirculating a portion of the exhaust gases back into the engine's intake manifold. This process lowers the combustion temperature, which in turn decreases the formation of NOx, a harmful pollutant. The EGR system plays a crucial role in meeting emissions standards and improving overall engine efficiency. If malfunctioning, it can lead to increased emissions and engine performance issues.