I'm aware that I shouldn't post Paid-Option-Parameters settings and Yaskawa Mode codes and whatever else; that being said, this Yaskawa developer password applies only to the virtual controllers in MotoSim/MotoVRC, and doesn't in any case let users acces to the magic-blue "Y mark" on the status bar (sadly, I tried by myself one nanosecond after getting this info, so no bothering with "does this work on real controllers dude?").
Enabling Yaskawa Mode on a virtual controller on first hand unlocks those protected parameters such as FD or S1D and so on...
But, again, there's a checksum generated with a Yaskawa algorithm on bottom of every protected parameter file, there's no way of doing this
If someone needs the code or wants to try it, I just want to make sure the Moderators are ok with me posting this.