Subaru LEGACY 2002 Quick Reference Index page 246

Exhaust
1. General
! The exhaust system consists of a front exhaust pipe assembly, a rear exhaust pipe with two res-
onance chambers, and a variable-flow muffler. The front exhaust pipe assembly consists of right
and left exhaust pipes each incorporating a front catalytic converter, and a rear catalytic converter
that is located at the joint of the two pipes.
(1)
(3) (5)
(4)
(6)
(2)
(1) Front oxygen (A/F) sensor RH
(2) Front oxygen (A/F) sensor LH
(3) Front exhaust pipe RH
(4) Front exhaust pipe LH
(5) Front catalytic converter RH
(6) Front catalytic converter LH
! The variable-flow muffler has a valve which opens when the exhaust pressure increases. This
helps realize low exhaust noise and high engine output simultaneously.
(1) Low engine speed
(2) High engine speed
GENERAL
(8)
(7) (9)
(1)
(10)
(7) Rear catalytic converter
(8) Rear oxygen sensor
(9) Resonance chamber
(10) Rear exhaust pipe
(11) Muffler
EX-2
(11)
(2)
B2H3903A
B2H3904A