This is sun automotive's highest performing voltage regulation product. basically it works as a capacitor for your entire car, providing needed voltage when demand gets too high.
It is good for a few whp at least (hey it made 12whp on the cyber evo), and has a cool battery indicator light so you know when your battery is dying or under too much load. overall a great product, i havent had any issues with water damage in the past year.
When i first installed, i felt a difference, a bit better acceleration and better electrical performance. after a while you dont notice as much but its one of those 'why not' mods where you might as well throw it on. every little bit counts. Installation is easy, just hook two wires to the battery + and -
