Front part of the exhaust pipe with compensator and catalytic converter 

The first part of the exhaust starts at the turbocharger and runs under the floor of the car to roughly the level of the gear lever. It contains two important components. The first is the compensator, a flexible part that looks like a caterpillar and which dampens the vibrations and shocks of the exhaust. Equally important is the catalytic converter, which breaks down the harmful substances in exhaust gases.