Subaru 2009 IMPREZA Service Manual page 194

Rear Catalytic Converter
EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES)
3. Rear Catalytic Converter
A: REMOVAL
The rear catalytic converter is integrated into the
center exhaust pipe; therefore, refer to "Center Ex-
haust Pipe" for the removal procedure. <Ref. to
EX(H4SO)-9, REMOVAL, Center Exhaust Pipe.>
B: INSTALLATION
The rear catalytic converter is integrated into the
center exhaust pipe; therefore, refer to "Center Ex-
haust Pipe" for the installation procedure. <Ref. to
EX(H4SO)-9, INSTALLATION, Center Exhaust
Pipe.>
C: INSPECTION
1) Check the connections and welds for exhaust
leaks.
2) Check for hole or rust.
EC(H4SO)-4