Yes, the VS really works. Try asking those ICE that spend thousand for a giant capacitor in their sound system, they will tell you how different it makes.

As long as you use good quality caps, recommended at least 16V with heat tolerance 100centigrade and above. Also reported how VS response depends on the total Farad and your engine capacity (CC). As most VS's Farad are tuned for higher CC car, some k-car will not notice significant change but it still works. [I am not an EE engineer, just what I read from those Taiwanese car magz]

On your saga, you can feel the different straight away and it will get better after a few days as some cars tend to respond slower.
A negative point from the battery to any part of the car is call ground. If its not called grounding , then what should I call it ?
Any supporting website saying ground to the alternator is not call grounding but something else? (what is the name?)

in marketing point of view..rm80 is very competitive price..u gotta face me (zaptor), icecube (PB) and other vs sellers.....

urs is new n just intro to market..selling at rm80 is not an ideal price..