I recently bought a nismo spoiler and had it painted and installed on my 04 350z. Since it was installed, the hatch will not stay open. When I open the hatch to put something in it, it closes like the hatch is too heavy. I think maybe the lift cylinders are not strong enough to support the added weight of the spoiler. I am wondering if anyone has had a similar problem or if anyone knows what I need to do to fix the problem. I am not sure if just replacing the lift cylinders will fix the problem. Thanks

 

you need to replace those cylinders with heavier duty ones.

http://mynismo.com/products/?id=4660&rsku=19843
or
www.350zsource.com
$99.00 (I had some trouble locating the shocks on this site)

Or get a stick

 

http://www.thezstore.com/store/merch...ry_Code=BSC09I

 

I have this problem too. They stay up 1/2 the time. Other times i hope they dont crash on me