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Suzuki GSX-R 1000 Service Manual: Exhaust control system description

The exhaust control system (excs) consists of the exhaust control valve (excv), exhaust control valve actuator (excva) and exhaust control valve cables (excv cables).

Excv is installed in the exhaust pipe. Excva is mounted inside of the right frame. The excv is operated by the excva via the cables. This system is designed to improve the engine torque at low engine rpm.

Suzuki GSX-R. Exhaust control system description


  1. Exhaust control valve actuator (excva)
  2. Exhaust control valve (excv)
General description
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Exhaust control system operation
The excs is operated by the signal supplied from the ecm. The open/close operation of the excv is performed by the excva which is controlled by the ecm by changing the current direction of the ac ...

Other materials:

Rear wheel assembly removal and installation
Removal Loosen the axle nut (1).  Raise the rear wheel off the ground and support the motorcycle with a jack or wooden block. Caution make sure that the motorcycle is supported securely. Remove the axle nut (1).  Loosen the left and right lock-nuts (2) an ...

Excva removal and installation
Removal Turn the ignition switch off.  Remove the left side cowling. Refer to “exterior parts removal and installation” in section 9d .  Connect the special tool (mode select switch) to the dealer mode coupler. Refer to “self-diagnostic procedures” in section 1a . After tur ...

Special tools and equipment
Recommended service material Note required service material is also described in the following. “Fuel pump components” Special tool ...

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