Ok i read a bunch on the grounding kit. the z guys say it ggives better idle and smoother revs. i am happy with our revs as is, but want less vibration from the engine. i doubt the wires would make a difference, but was wondering if any of you a noticed a difference. i cant stand steering wheel vibration at idle, and am willing to do anything to get rid of it! so any feedback on the wires would be appreciated.