i have a 08 gs350. Does anyone know if i modify my navi where i could watch dvd's without emergency brakes on. would that affect the warranty?

 

It will affect warranty if something happens and they open it up and see the handy work.

I haven't heard much about the 08 gs350 navi hack, but it will more then likely be the same as the 07s. check the sticky on top of the 3GS section