Purpose, Function
By lengthening the exhaust passage, the transmission of exhaust pressure waves to other cylinders can be delayed, and the amount of gas exhausted from a cylinder and forced back inside the combustion chamber is reduced By reducing the residual gas, the temperature inside the combustion chamber is reduced and the occurrence of knocking even at a high compression ratio is inhibited.
Construction
The exhaust manifold is installed to the rear of the engine. In addition, the catalytic converter (WU-TWC) is integrated (WU-TWC).

When the No.1 cylinder is at the intake stroke, the No.3 cylinder is at the exhaust stroke. By inducing the high temperature gas exhausted from the No.3 cylinder into the No.1 cylinder, the high temperature gas in the No.1 cylinder remains. If the amount of residual gas is high, the temperature in the combustion chamber rises and knocking can easily occur. With the 4-2-1 exhaust system, the transmission of exhaust pressure waves between each cylinder is delayed by the long exhaust pipes.

Exhaust System Removal/InstallationSpeaker Grille Removal/Installation
Center Speaker Grille
1. Insert a tape-wrapped flathead screwdriver into shown in the figure and remove
hooks A in the direction of arrow (1).
2. Take the shaded area shown in the figure, and remove the center speaker grille
in the direction of arrow (2) while detaching hooks B.
3. ...
Mirrors
Mirrors
Before driving, adjust the inside and outside mirrors.
Outside Mirrors
WARNING
Be sure to look over your shoulder before changing lanes: Changing lanes without
taking into account the actual distance of the vehicle in the convex mirror is dangerous.
You could have a serious accident. ...
Car Navigation Unit
Purpose
Reads the SD card data inserted into the car-navigation unit and sends the
read data to the audio unit.
Function
The car-navigation unit has the following functions:
TomTom Home
By connecting the SD card to your computer at home, the map data or software ...