Simple, I had the same problem with my manual conversion.
Basically the wiring loom that goes back to the computer is different between auto and manual. You will need to get yourself an automatic transmission loom, plug it in to the fuse box harnesses and then re-wire it to make it work with the manual transmission.
Otherwise these things will not be working:
Speedo
Power Steering
Hicas
Oil Pressure gauge in cluster
Turbo Pressure gauge in cluster
I learned the hard way after taking it in and out of workshops for two weeks.
There is some information in this thread on how to wire it up, but my understanding is that its not exactly the same with the r33
http://www.skylinesaustralia.com/forums/Di...05#entry2606505
If you cant work it out yourself, give my mechanic a call, hes the one who sorted mine out. Im sure he will be able to tell you how its done.
Turbo Tune
959 South Rd
Melrose Park SA 5039
(08) 8297 1030
Ask for Mark