i think just grounding the cylinder head real good would get good results since having a good ground to the head would have less resistance for the spark plug current to ground out. i ran a 4 gauge wire from my negative battery terminla to the head on my mr2 when i had it and i think it made a slight differance. arent those hyper ground systems expensive. i would rather just buy my own wire and do my own thing using good quality 4 gauge wire. it would probally have the same results. the club 4ag forum had a post on the same subject and some one had made there own for way less $. i could see how it would improve top end power since the spark duration gets lower at higher rpm and a good ground would reduce missing and the current would be stronger with a better ground.
