for those that dont know what it is, replacing ground to chassis wire for battery, engine and alternator with shorter length 4ga wire. I havent done it, but I havent had any problems where I would need to. Ive read that its helped plenty of people, especially those running heavy duty systems.
I'm currently halfway through this.. a friend made all three wires for me, but as of now, I only have two of them. I hae heard nothing but GREAT thigns about this.... its definitely a MUST DO if you are running glow, a system, or anything else with a power draw.