Alot of people over at My350Z.com have been stating smoother engines since they've upgraded all the ground wires under their hood. Has anyone with a 02-03 done this? And if so, where did you get the wires? And was the upgrade noticable as far as power, smoothness, etc?

 

The most common brand is this one:
http://www.sunautomobile.com/

A lot have people have made their own. Some guy on the 350Z forum made them and I believe that's what alot of the guys there are using. Some max owners have them with mixed results. From what I understand they are a factory option on the 350Z in Japan.

I think what keeps a lot of people from trying them is the high price vs small gains.

 

I got it, didn't notice a difference. Save your money.

 

Buy something else with your money!

Unless you have increased your current source enough to create a choke point at the stock ground location, then you'll have to be an electron to notice the difference. Seriously.

Also increasing your ground bus can cause ground loops or pickup points for noise.

SHIFT_woosh