Removing Primary Catalytic Converter On Right Side

→ Let hot components cool down.

→ Wear personal protective gear.

→ Wear personal protective gear.

→ Get someone to help if necessary.

1. Primary catalytic converter on right side
2. Bottom holder on transmission housing
3. Top holder on transmission bell housing
4. Clamp on flange for turbocharger
Fig 1: Component Overview - Primary Catalytic Converter (Right)
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

1. Unclip electric plug connections -1-  for the oxygen sensors in the engine compartment at the right and remove them by pulling them up -arrows-  . Release and disconnect electric plug connections.
   Fig 2: Disconnecting Plug Connection For Oxygen Sensors At Right

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
2. Check that the cables are routed correctly -arrows-  !
   Fig 3: Locating Oxygen Sensor Cable Routing (Right)

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
3. Remove cable on the right cylinder bank from the cable duct -1-  and unclip it from the bracket -2-  .
   Fig 4: Identifying Right Cylinder Bank And Cable Duct

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
4. Unclip cable at the transmission housing.
5. Pull oxygen sensor cables downwards.
   1. 5.1. Fasten the cables to a suitable cord so that you can pull them up again during installation.
   2. 5.2. Pull the cables down past the vacuum pump.
6. Loosen clamping sleeve -1-  on the right exhaust pipe.
   1. 6.1. Loosen clamping screws -2-  .
   2. 6.2. Slide clamping sleeves -1-  to the rear -arrow-  .
   Fig 5: Loosening Clamping Sleeve On Right Exhaust Pipe

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
7. Unscrew nut -1-  on the bottom holder -2-  .
   Fig 6: Identifying Mounting For Bottom Holder

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
8. Unscrew fastening screw -1-  on the top holder -2-  .

   Information 

   • Access to the clamps between the heat shield on the all-wheel drive transmission at the front and the turbocharger is very restricted. 
   • Use a narrow tool (sockets, extensions). Use jointed sockets if necessary. 
9. Unscrew screw -3-  on the clamp -4-  and remove clamp -4-  .
Fig 7: Identifying Mounting For Top Holder And Clamp
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
10. Remove primary catalytic converter.