Overview - Emissions Control System, Version 1

Fig 1: Emissions Control System Overview (Version 1)

Courtesy of AUDI OF AMERICA, LLC

Nut
- 40 Nm
- Replace
- Coat turbocharger stud bolts with hot bolt paste.
- Hot bolt paste.
Gasket
- Always replace after removing
Turbocharger
Heated Oxygen Sensor -G39- and Oxygen Sensor Heater -Z19-
- Removing and installing. Refer to Heated Oxygen Sensor -G39-, REMOVING AND INSTALLING .
Oxygen Sensor After Three Way Catalytic Converter -G130- and Heater for Oxygen Sensor 1 after Catalytic Converter -Z29-
- Removing and installing. Refer to Oxygen Sensor after Three Way Catalytic Converter -G130-, REMOVING AND INSTALLING .
Catalytic Converter
- Protect catalytic converter from shocks and impact stress
- Removing and installing. Refer to CATALYTIC CONVERTER, REMOVING AND INSTALLING .
- Align the exhaust system free of tension. Refer to EXHAUST SYSTEM, INSTALLING WITHOUT TENSION .
Nut
- 25 Nm
- Always replace after removing
Gasket
- Always replace after removing
Front Muffler