I took my z-tube from my totalled g35 6mt, installed it on my fx35 however I needed a piece of extra tubbing from te original intake to complete te install. I am really disappointed. It sounds totally weak and not like ow it did on my g. Any suggestions.

 

Well for a full length tube you can try the LMS intake, http://lmspower.com/product.phtml?p=8&cat_key=12

Here's what it looks like on a FX with an open filter.

 

I used to have a 350 w/ an intake... Did the exact same thing. The Z-Tube on an FX completely blows.