EXHAUST SYSTEM


  1. CONSTRUCTION


    1. Dual main mufflers are used to ensure engine performance and reduce exhaust noise.

    2. The exhaust control valve is built into the main muffler to control the exhaust gas flow according to engine speed. This reduces noise when the engine is running at low speed as well as reducing exhaust back pressure when the engine is running at high speed.


      1. When Control Valve is Closed (Low Engine Speed)


        1. Since the pressure in the main muffler is low, the control valve is closed. Hence exhaust gas does not pass the bypass passage, and exhaust noise is decreased in the main muffler.

      2. When Control Valve is Open (Middle to High Engine Speed)


        1. The valve opens as the engine speed and back pressure in the muffler increases. This allows a large volume of exhaust gas to pass into the bypass passage, thereby substantially decreasing back pressure.

        B003SHLC03
        *1 Exhaust Control Valve *2 Straight Pipe
        *a Control Valve Open *b Input
        *c Output - -
        B003SJM Exhaust Flow (When Control Valve is Closed) B003SJ8 Exhaust Flow (When Control Valve is Open)