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/InstallationRear Window Defroster/Outer Mirror Heater
Outline
Fogging is cleared from the rear window and outer mirror glass by heating
of the filament.
Structural view
System wiring diagram
Vehicles with full-auto air conditioner system
Vehicles with manual air conditioner system
Construction
Rear window defroster
...
Shift Solenoid No.1 [Fw6 A EL, Fw6 Ax EL]
Purpose/Function
Shift solenoid No.1 adjusts the hydraulic pressure in the low clutch circuit
based on the current demand from the TCM according to the vehicle conditions.
Construction
Shift solenoid No.1 is installed to the solenoid control valve body.
Shift solenoid ...
Power Brake Unit
Purpose/Function
A 9.8-inch, single diaphragm type power brake unit has been adopted, achieving
compatibility between high braking performance and excellent brake feeling.
Construction
The power brake unit cannot be disassembled. Therefore, if there is any malfunction
in th ...