Ground Wires

I am buying a set of ground wires for my dad's lex to help the gas mileage and my question is, should i buy the sun auto hyper ground wires (better wires) or the apex'i super ground system, which includes a voltage stabilizer. Im not sure if the voltage stabilizer will make the difference for the apex'i kit only havin 3 wires, probably of less quality. IF anyone has used these, please help!

and buy a real deal performance upgrade.

Changing and adding ground wires on a car that runs OK is a waste of time, let alone the money you will pay.

There is a thread of knowledge in th added grounding sale pitch.
But the end result is, it is a scam.

Later,