System Operation
WARNING: This page is about a different car, the 2013 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
On the 3.5L Ti-VCT and 3.7L Ti-VCT engines, 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.