Exhaust System
Component Location
The 3.5L Ti-VCT exhaust system consists of:
- a LH one-piece catalytic converter manifold that is mounted to the LH cylinder head.
- a RH one-piece catalytic converter manifold that is mounted to the RH cylinder head.
- an exhaust Y-pipe that is mounted to the LH and RH catalytic converters along with the muffler and tailpipe assembly.
- a muffler and tail pipe assembly.
The 3.5L GTDI exhaust system consists of:
- two turbocharger-mounted catalytic converters.
- a LH and LH exhaust flexible pipes that is mounted to the catalytic converters along with the muffler and tailpipe assembly.
- an underbody catalytic converter.
- a underbody catalytic converter and resonator which is part of the muffler and tailpipe assembly.
- isolators installed on the body and muffler hangers.
The 2.0L GTDI exhaust system consists of:
- a catalytic converter that is mounted to the turbocharger.
- a exhaust flexible pipe that is mounted to the catalytic converter along with the muffler and tailpipe assembly.
- a muffler and tail pipe assembly.
Overview
The exhaust system provides an exit for exhaust gases and reduces engine noise by passing exhaust gases through the catalytic converters and a muffler assembly. The catalytic converters also play a major role in reducing air pollutants.
System Operation
On the 3.5L Ti-VCT, exhaust gases pass through LH and RH catalytic converters into the exhaust Y-pipe assembly. The exhaust gases then flow through the muffler and tailpipe assembly.
On the 3.5L GTDI, exhaust gases pass through the LH and RH turbochargers, catalytic converters and then into the LH and RH exhaust flexible pipes. The exhaust gases then flow through the underbody catalytic converter and a resonator which are both part of the muffler and tailpipe assembly.
On the 2.0L GTDI engine, exhaust gases pass through the turbocharger, catalytic converter and then into the exhaust flexible pipe assembly. The exhaust gases then flow through the muffler and tailpipe assembly.