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/InstallationEngine Abbreviations
AAS
Active Adaptive Shift
ABS
Antilock Brake System
ABDC
After Bottom Dead Center
ACC
Accessories
AFS
Adaptive Front Lighting System
ALC
...
Rear Map Light
Purpose
The rear map lights shine light at the center of the vehicle interior.
Function
The rear map lights illuminate when the interior light switch is in the ON
position or the map light switch is turned on.
The rear map lights illuminate according to the lock condit ...
PID/Data Monitor Inspection [Standard Deployment Control System]
1. Connect the M-MDS to the DLC?2.
2. After the vehicle is identified, select the following items from the initialization
screen of the M-MDS.
a. Select “DataLogger”.
b. Select “Modules”.
c. Select “RCM”.
3. Select the applicable PID from the PID table.
4. Verify the PID da ...