This is a little more engine performance than anything else but i figure someone here can give me an answer. I've noticed that a lot of aftermarket companies have performance ground wire kits. The idea makes sense to me of making bigger ground wires with more grounding points, but does it really make the engine run any better? I've heard of claims of gaining noticeable gas mileage and 5hp. I don't believe it but if someone has any experience with it then do tell. If better and more ground wires do help then i might just make up some myself for my cars.