I have the original hyperground system by sun automobile in my 5th gen, and yeah you can feel a difference in the electrical system, slightly more torque and power. Overall I like it, it improved my throttle response alot, more than my exhaust did.
For those who wonder how you install it, it sort of routes like x-mas tree lights. It starts at the chasis, goes to the battery, tranny, Intake
manifold, cylinder head, and ends at the chasis again.