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Here's the Product at ptuning.com

It's rather expensive, but I like the idea of having voltage regulation in the vehicle. I don't know if it gives better or equal results as opposed to a regular ground kit, or if it is comparible to the Osuno system. Has anyone used this, or heard any feedback on it?

 

I have a friend who had the A'PEXi system on his WRX. It was a well-put-together unit. I don't know if it's worth the $179 price tag, though. Unless you're into engine bling, I suggest you get a Pivot Raizin kit.

 

I have the SUN Hypervoltage system, and have noticed no differences. I will be upgrading my ground wires, from the worthless 8 gauge though.

 

ground wires do nothing, even if you had 00 gauge wires, you might get a little better idle.

 

I did the major 3 on the Matrix and the lights don't dim as much as they used to when operating the electric windows and the AC. It does idle better, too.

 

I was looking for the increase in fuel efficiency they promised.
I'm running a T1R Hyper Voltage stab

 

yea i agree squirrel, but im tired of people thinking 200 dollar grounding kits are gonna give them these huge results. i spent 5 bucks and got better idle from the head grounding. but people shouldnt expect 10 hp from some grounding.