voltage stabilizers

As far as gaining you tq and hp - waste of $; at least the stabilizers are. As long as the grounding kits are of good quality, they would be worth having, but if they gain you any hp/tq, then you had grounding problems to begin with, and you could have gotten the same gains by fixing your stock setup.

Today's automobiles rely heavily on their electronic sensors,  and as we all know electronics require good grounds. All the sensors are designed to work throughout a set resistance or voltage limit, so if you have a higher resistance through ground, or if you have a lower operating voltage, there is a possibility that it could affect the sensors and therefore performance negatvely.

On a Maxima forum I frequent, I have heard several positive reutals regarding the grounding kits; people say they have a more stable idle, bighter headlights, quicker acceleration (this I doubt), ect. I have never heard of someone getting anything out of a voltage stabilizer - aren't they just a capacitor bank anyway?

-Matt

You would bolt the "disc" thing to your vehicle chassis. You would then ground everything else to that disc. You would also have a single arge wire running from your battery to ground.

Hope this helps,

-Matt

You want to find a grounding point that has a low resistance return to the negative battery terminal. Keep this point close to the battery for best results. If you can measure the return resistance from the disc thing to the battery terminal, it should ideally read less than 0.5 ohms, but certainly less than 1.0 ohms.

-Matt