Subaru 2002 Impreza Service Manual page 141

TURBOCHARGER SYSTEM
Intake (Induction)
G: INTERCOOLER
0
Since the intake air having passed through the turbocharger unit is heated to avery high temper-
ature, the air itself is expanded, resulting in a lower supercharging charging efficiency. The inter-
cooler is provided just before the throttle body to cool down the intake air and improve the super-
charging efficiency.
0
The intercooler is an air cooled type. The air delivered from the air duct provided at the engine
hood flows through the core and cools the intake air passing through the intercooler.
NF0351
A:
From turbocharger
B: To
throttle
body
I N-9