i've got grounding wires kit installed in my Z for almost a week , and i don't know ..... i think i can say there is completly nothing, it just as it wasn't installed ... the most thing people said about this mod. that it will eliminate the rough idle after pushing the car hard or after stoping the car for sometime with the engine on.

i still do have that rough before and after intallation (ground wires)

i have those NISMO Grounding wire (Even i can believe Nismo had one) But as performancenissan said its Nismo ,then....... whatever.

the installation is the same as the instruction paper said......

any suggestions

 

https://my350z.com/forum/showthread....threadid=99705

 

that's normal... i installed a 5-wire and didn't notice a smoother idle/acceleration either... my voltage meter registers a few clicks higher than before, but that's about it

imo it's just a cosmetic mod that brightens up the engine bay... i wouldn't expect more than that