My sig say it's all stock because that was my line back in the days when i was stupid and street racing.

 

i agree with the OP, i was very skeptical about how extra grounding can make your car shift smoother. well, i didn't believe it would make any difference but for $20 for the 10gauge wires+connectors, i made myself a set of 5 ground wires and followed the instruction posted on the 350z forum. woo, it actually does shift smoother. i owe a G35 2004 AT sedan. This was the best $20 i ever spend on the car! i have gone from a skeptic to a believer! just my 2 cents.

 

Check it out it does make a difference http://www.maxground.com/ground.htm

 

I bought the maxground kit off ebay for $39 with shipping.

I received it extremely quickly by Priority Mail and it was easy to install, everything required for the install was included, minus the tools.

I'm not sure how to describe the difference but the car just seems more stable. It does seem to make things idle smoother...

I haven't noticed much on the tranny side of things, and yes I do have a 5AT. But I've got 67k on my G and have yet to do a tranny flush.

Overall it looks good and there seems to be a positive improvement in the car.