Suggestions?
- ditch the cat
-trade the Greddy intake for the Blitz SUS
-get an electronic boost controller and turbo timer
-get a better turbo; the T28 isn't all that (my boy has a SE-R w/ SR20DET using the stock turbo; when he's at 12psi he can keep up w/ me with my current mods; I think a better turbo would make a huge difference)
-custom exhaust manifold or get a really cool one for $350 from www.splparts.com
- BOV
- External wastegate
- Intake and intercooler piping

Is the Cobra MAF supposed to be used w/ that motor? I believe it worked on Z31's, but if I recall you should be using a Z32 MAF on your setup. Just going from memory (which sucks) so I may be wrong.

What are your plans for brakes and suspension? Everybody always worries about power first. I always concentrate on these two most important areas before I do anything else.