The company that markets the wires under the name "SUN", that sells the hyper ground system is the real deal. They've actually done their homework on what type of wire and all that to use. Aside from that, they post on their magazine adds gains of about 5 whp and 5ft/lb of torque on a Honda Type-R, which is about as close as you can get to our cars in the states.
Any way, at this rate, I'm running out of stuff to do for extra HP, so I figure even for a couple whp, it's worth 100-120 bucks.
Later,
Aj