Cheers Mark
The reason why I want it off is because when you put a slip on exhaust the EXUP valve doesn't need to operate. So included in the fitting instructions of many manufacturers it says disconnect the cables from the valve on the exhaust.
That is an easy job to do - so no problems there.
The EXUP servo motor is therefore not being used with any slipon exhaust. Removing it as you say will cause an error 17 code to appear on the clocks. There are 2 ways of cheating the ECU to think there is a servo motor in place and the above is one of them.
The 2nd is a plug that goes on it but that whole site is in german and I haven't got a clue what it says :S hence why I went for the english version
http://www.fazerforum.net/viewtopic....7026&start=225
or even more info
http://www.fazerforum.net/viewtopic....ht=exup&t=7026