Just a final update,
They had so many bloody problems and couldn't work it out, apparently the ecu blew a chip or something then they couldn't get it repaired so replaced it, had heaps of trouble finding a tiptronic ecu for the r34.
Eventually got one but then they tried to tell me it was fixed, but I took it for a drive and said no way was I taking that, it slipped so bad from about 4000 to 6000 just to change 1st to 2nd at about 3/4 throttle, he said oh we didn't know how hard you would drive it! I said that's not hard that's only 3/4 throttle.
Long story short, they bought another box, rebuilt it with all the goodies that mine was meant to get then put it in, no probs now! Bad thing is they charged me about $1400 extra for all the ecu drama's (repaired twice and a second hand one as well.) so it cost $4600 instead of $3200, but happy to have her back again after 2 month away.
Dylan.