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Specialist Motorcycle Workshop Solutions
Biketech ISC
biketech isc   For Suzuki models with ISC valve (idle stability control)
GSXR,SV,GSX,Boulevard,M90 etc

For Euro3 (early 2007 on) bikes, the ISC valve is held at a fixed opening to allow accurate synchronising or idle mixture adjustment.
With earlier euro 2 bikes without ISC, the led's indicate correct engine temperature ensuring the secondary throttles are not on "choke" before you start balancing.

Simple to connect and very easy to use.
Just connect to the 6-pin Suzuki diagnostic (OBD) port and that’s it!
Steady LED shows when bike is up to temperature and ready for throttle valve synchronising.
Automatically detects the type of injection fitted (Euro2 / Euro3)

Use with any carb balancer
Also a perfect partner for use with the BikeTech Suzuki Efi Tuning Tool


Click here for more information

Order Code: ISC

Price $85 inc GST


Biketech ISC can be purchased online. Click here to visit our online shopping page.



What is ISC?

ISC stands for Idle Stepper Control or Idle Stability Control.

On some Euro 3 (2007 on) Suzukis (e.g. GSXR1000), the throttle valves are entirely closed at idle so no air passes. The air inlet is executed by a separate valve called the ISC valve which is operated by a stepper motor.
This valve is controlled by the ECU which is aiming for a pre-programmed target idle speed.
The system works very well but makes it virtually impossible to synchronise throttles in the usual way, as the idle speed (and hence vacuum) continually changes.
The only way to synchronise the throttle bodies is to override the ISC valve, to hold it steady while the balancing is carried out.
If the engine is not fully up to temperature, synchronising will be compromised because parameters change as temperature rises - the continuous LED also shows that the correct temperature has been reached to allow accurate throttle synchronising.
The same principles apply to use of the BikeTech Suzuki Efi Tuning software - a fixed idle is essential (as is a suitable temperature) in order to be able to gauge what effect the mixture changes are having without the ISC system overriding the results.
For late model bikes with Idle speed control, you cannot accurately balance the throttle bodies without disabling the ISC.
Essential for quick and accurate throttle synchronisation of post 2003 fuel-injected Suzuki motorcycles.