If you installed the extension prior to the introduction of the installation script in https://github.com/calasanmarko/TurboMac/commit/f51fbd6ae8e6cb4b41bfd7733e6ecd3eb8143e7c, you will also need to manually restore IOPlatformPluginFamily.kext (and/or any other kext you might have removed) from wherever you put it back into /System/Library/Extensions.
Uninstallation scripts and instructions have been added as of v1.0.1b, or https://github.com/calasanmarko/TurboMac/commit/adb40b51b616de431c929aacf5b1a30d478aa079.
If you installed the extension prior to the introduction of the installation script in https://github.com/calasanmarko/TurboMac/commit/f51fbd6ae8e6cb4b41bfd7733e6ecd3eb8143e7c, you will also need to manually restore
IOPlatformPluginFamily.kext(and/or any other kext you might have removed) from wherever you put it back into/System/Library/Extensions.