I uploaded the last version (1.2) of the Mario & Luigi Autosplitter, you can find it in the Resourses page.

The use of the Autosplitter is not mandatory but still highly recommended, as you wont need to retime runs.

You can find all the details on how it works in the ReadMe inside the .rar file.

Friendly reminder that this game has an autosplitter, which allows you to always start and end the run at the frames that the official timing method uses.