Didnt fix my issue BUT...
I love this thing. It gives me a nice ground, I just had my ground hooked up to the battery. This made it a lot easier to get a nice ground. Easy to install. Works great with my 8 and 10 gauge wires. (8 for the sub, 10 for the speakers).
Pros: Gave me a good ground, easy to install, able to use 8 and 10 gauge wires and small enough to place just about anywhere.
Cons: Didnt fix the engine noise. I have literally tried everything that I can to get rid of the buzzing in my speakers from the engine. Im half tempted to get shielded cables for my speaker wires. Even though i have no desire to rerun the wires to the doors it might be my last option before replacing my alternator. I have shielded rca's and now a perfect ground. Not worth knocking off stars though. It dose its job. And it makes my install look that much more professional.