Reported this on Z32 forum as z32 has all kinds of issues with FUCA's.
http://www.aus300zx.com/forum/showthread.php?p=1426396#post1426396
Survey says, these are not suitable for Z32.
There is a group buy going on ATM on the z32 forum with some good stuff, including various coilpack and injector testors, TSP, CAS, injector, DET sensor elimators etc.
Check it out here:
http://www.aus300zx.com/forum/showthread.php?t=331682
So I removed the plenum on Sat, to swap over for another with larger throttle bodies.
Got it all back together Sat night (before the cruise on sunday) and couldn't get the idle down below 1500rpm. I am assuming that it is the butterflies on the new throttle bodies that are leaking
Going to have to swap them out again so I can at least enjoy driving the POS over the holidays.