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/InstallationDSC HU/CM Removal/Installation
WARNING:
If the DSC HU/CM configuration is not completed, it could result in an unexpected
accident due to the DSC being inoperative. If the DSC HU/CM is replaced, always
use the automatic configuration function so that the DSC operation conditions
are correct.
If the DSC re ...
Front Body Straight Line Dimensions (1) [Dimensions]
Point symbol
Designation
Hole diameter or bolt or nut size mm {in}
A
Cowl panel installation hole
?5 {0.2}
B
Wiper bracket datum hole
?7 {0.3}
C
...
Auxiliary Jack/Usb Port Removal/Installation
1. Disconnect the negative battery cable..
2. Remove the upper console..
3. While pressing the auxiliary jack/USB port. tabs in the direction of the arrows
(1) shown in the figure, press the auxiliary jack/USB port. in the direction of
the arrow (2) to detach the auxiliary jack/USB port. tab ...