Sorry guys, I'm pretty ignorant on this type of stuff. And yes, I search, but apparently used the wrong search terms because the results were > 500, and they didn't even date before mid 04.

Anyway, I've got two bone-stock g's. An 04 5AT, and an 05 6MT. Because of the purchase of the newest G, I have a very small budget, if any for mods. So, can anyone tell me what the Z-Tube is? What it does? And is it the "OEM Z Tube" offered by everythingg35.com?

Also, I've noticed people mentioning a grounding kit. Again, exactly what does this do, and why is it considered a good upgrade? And how will it affect the 5AT vs. the 6MT?

I'm not tracking either vehicle, and from my understanding the Z-Tube is primarily for sound.

Any help here?

I'll try to help you out as best I can...

Z-Tube: This is the intake tube off of the Nissan 350Z. Us G35 owners like to trade our intake tube for the Z-tube because the Z-tube is less restrictive than our intake tube. Some people say they do feel an increase in performance. I actually just installed the Z-tube on my '04 coupe today. It is definitely a lot louder than before above 3500rpms. Under those rpms, you can't really tell a difference. I think the sound is what gives some people the thought of "incresed performance". Yes, this is the same OEM Z-Tube offered on everythingg35.com. But try looking for it used....you can probably pick it up for $50 or so locally.

Grounding kit: The grounding kit is just a set of thicker grounding wires (I think 4gauge wire) than stock. I've read that for 6 m/t owners, grounding wires help for a quicker start up and a smoother shift feel. For 5 a/t owners, I have read that it does the same thing for the 6 m/t owners, except they may feel a slight gain in performance.

How many hours does it take to install the Z-Tube?

BTW - congrats on 2 G's is one a daily driver and the other the weekender?

The install should take 20 minutes. I have never performed a single modification on any car (performance wise) and it took me 30 minutes to install the Z-tube today...which included 10 minutes of walking abck and forth from my car to the computer to read where the AC line was. The sound...amazing.

Actually, I got the 04 for my daily driver back at the end of March. My wife liked it so much, she wanted one for herself. She actually wanted the 6MT, but they are extremely hard to find, used, in our area. When she test-drove an 05, she said the liked the 04 more ( not the 5AT vs 6MT, just the other things ), so she took my car and I got a new 05 6MT. I love my wife

2 very good mods. Z-tube for sound and performance , and the grounding kit for smoothness and shift ease.
Z-tube will take about 1/2 and hour with minimal knowledge and tools.
Grounding wires depending on # will take 1/2 to 1 hour.

C.