Removing Exhaust System

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2019 Porsche 911, 2018 Porsche 911, 2017 Porsche 911, 2016 Porsche 911, and 2015 Porsche 911. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION: Hot components

Risk of burns

→ Let hot components cool down.

→ Wear personal protective gear.

Information

Specifications for wrench sizes (a/f specifications) for screw heads are described as follows:

Torx screws: (E..) for external Torx, (T..) for internal Torx.
Hexagon-head bolts (internal and external hexagon): Wrench size (a/f)

Unclip and disconnect plug connection for the oxygen sensors -1 and 2- in the engine compartment.
1. 1.1. Connectors on cylinder bank 1-3:
  
  Fig 1: Identifying Oxygen Sensor Connectors On Cylinder Bank 1-3
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
2. 1.2. Connectors on cylinder bank 4-6:
  
  Fig 2: Identifying Oxygen Sensor Connectors On Cylinder Bank 4-6
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Guide the oxygen sensor connectors through at the side of the engine as far as the catalytic converters and unclip the oxygen sensor cables from the holders -arrows- .

Fig 3: Locating Oxygen Sensors On Catalytic Converter
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Remove flange bolts securing catalytic converter to the turbocharger.
1. 3.1. Loosen and unscrew four M8 hexagon nuts (a/f 12) -1- on both cylinder banks.
  
  Fig 4: Identifying Catalytic Converter To Turbocharger Flange Bolts
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  
  Flange bolts at the bottom:
  
  Fig 5: Identifying Catalytic Converter To Turbocharger Flange Bottom Bolts
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Loosen rear silencer mounting.
1. 4.1. Loosen two M8 x 50 cheese head bolts (hexagon socket head, a/f 6) -2- for the restraining straps.
  
  Fig 6: Identifying Rear Silencer Mounting
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
2. 4.2. Slide the restraining straps outwards off the holders -arrows- .
  
  Fig 7: Moving Restraining Strap
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
CAUTION:
Heavy components
- Risk of squashing
→ Wear personal protective gear.

→ Get someone to help if necessary.
Pull the exhaust system to the rear and off the studs on the turbochargers.
Only remove the exhaust system with the help of another person.
Replace all metal seals.