I've been wanting to completely disable VSC on my '05 GS430--seached the internet a lot, but couldn't find anything. Until now--just found the instructions at http://automobilemag.com/news/0601_lexus_gs_vsc/ . I tried it, and it works! The GS doesn't do great dounuts (maybe the lack of a limited slip), but it sure does slide real nice if you jab the throttle in the middle of a corner. So much fun.