Guys, I am not sure if the information I get from this friend is accurate.
As he is a quite experienced mechanic too, he told me that standard new cars normally do not need much of Voltage Stabilizer.
However, he explained to me that through his decades of experience that grounding cables is actually much more essential.
I wished I could get more information from him and cross reference with you guys.
I've used a Pivot VS before and I honestly do not see much difference except for the brighter headlamps.
Prolly because I had very minimum ICE in my car as the speakers sounded just as good as they were before installing the VS.
But hell it does make the engine bay looks a lil bit more interesting !