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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:

Battery visual inspection
Inspect the battery in the following procedures:  remove the front seat. Refer to “exterior parts removal and installation” in section 9d (page 9d- 6).  Visually inspect the surface of the battery container. If any signs of cracking or electrolyte leakage from the sides of th ...

Wiring harness routing diagram
Wiring harness no. 2 Tapping clamp : insert the clamp from the front side. Place the turn signal and position light couplers in front of the clamp. Steel clamp : clamp the wiring harness at the blue taping point. Bend the steel clamps to the front side. ...

Engine components removable with the engine in place
Engine components which can be removed while the engine is installed on the frame are as follows. For the installing and removing procedures, refer to respective paragraphs describing each component. Center of engine Item Removal Inspection Installation ...

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