Yes Jack, you can use the GS911.
Just a heads-up though. The C's TPS is on the side of the throttles bodies as normal, but the throttle bodies are hidden inside the airbox, and an absolute bitch to get to. I have a template somewhere that I made a few years ago for drilling 2 holes in the LHS of the airbox to be able to adjust it (relatively) easily.
Normal procedure would be to remove the airbox containing the TBs. Remove the TBs from the airbox and fit them to the bike without the airbox. Once the adjustment is done, remove the TBs from the bike, reinstall back into the airbox, and refit everything to the bike.