Subaru LEGACY 2002 - Page 246

Exhaust
GENERAL
EX-2
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.
! 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) Front oxygen (A/F) sensor RH (7) Rear catalytic converter
(2) Front oxygen (A/F) sensor LH (8) Rear oxygen sensor
(3) Front exhaust pipe RH (9) Resonance chamber
(4) Front exhaust pipe LH (10) Rear exhaust pipe
(5) Front catalytic converter RH (11) Muffler
(6) Front catalytic converter LH
(1) Low engine speed
(2) High engine speed
(1)
(3) (5)
(8)
(2)
(4)
(6)
(7) (9)
(10)
(11)
B2H3903A
(1) (2)
B2H3904A