GID Plugin working on v1.31 2015-04-06

Installation:

First backup your d3d9.dll file.
Extract the rar file into your GSC folder and overwrite if it asked.

After that rename GSC.exe to rFactor.exe

When you want to go back to orginal settings:

Delete in your GSC folder:
Plugins\GID
Plugins\GIDPlugin.dll
GIDPlugin.ini

After this copy your backupped d3d9.dll into the folder and overwrite.
At last rename rFactor.exe to GSC.exe

Good luck.