Easy step by step guide on how an automotive exhaust system works, though appearances may vary, the concept is the same for most vehicles.
Step 1 - Once exhaust gases are generated
from an internal combustion engine, the exhaust system is responsible for
routing these gases from the engine. The process begins as the exhaust valve
opens and releases hot gases into a exhaust manifold which is connected to the
cylinder head. An exhaust manifold is bolted to the cylinder head,
and is used to gather exhaust gases from the cylinder ports and collected into one location.