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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:

Injection timing description
Injection time (injection volume) The factors to determine the injection time include the basic fuel injection time, which is calculated on the basis of the intake air pressure, engine speed and throttle opening angle, and various compensations. These compensations are determined according to ...

Ecm / various sensors
Since each component is a high-precision part, great care should be taken not to apply any severe impacts during removal and installation. Be careful not to touch the electrical terminals of the electronic parts (ecm, etc.). The static electricity from your body may damage them. ...

Water pump components
Impeller Mechanical seal Oil seal O-ring O-ring 8 Nm (0.8 Kgf-n, 6.0 Ib-ft) 10 Nm (1.0 Kgf-n, 7.0 Ib-ft) 6 Nm (0.6 Kgf-n, 4.5 Ib-ft) 13 Nm (1.3 Kgf-n, 9.5 Ib-ft) Apply grease. Apply engine coolant. Apply molyb ...

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