I am planning to get one, but i don't know which one should i get. Does the aluminum or CF Z tube improve performance? thank you.

Metals retain heat more. Not sure about CF. I like stealth, so I went w plastic.

some people said the aluminum has better performance than the rubber one

I heard the Nismo Z tube is aluminum. It gives better air flow. Is it true? Or is it because the person wants to sell me their aluminum z tube

Nismo Z tube? Never heard of it. Got a picture?

We have a weiner!!!!
Lol, Have a great weekend!

Huh? What's that mean?

I have a regular z-tube and wraped in it exhaust tape to keep the engine heat out. So i didn't/don't care what mine looks like! I believe other members have done this also. I actually gives your engine bay a race car look.

heh, play on words (yeah, lame..I'll admit ).... winner/weiner. The winning statement being "because the person wants to sell me their aluminum z tube".

what if i get the CF z tube which is supposed to keep less heat, and then sand down the inside to be smooth for better flow? ive seen the inside of the cf ztube and its all bumpy inside. might be bad for flow.

hm....I think rubber one is the way to go.