There is more to ecu's than a pfc or a mines. Heres a humungus thread on the VIPEC ecu http://www.skylinesaustralia.com/forums/Pl...ng-t218179.html
There are also several other brands you could go, ie nistune, autronic etc. Do a SEARCH, readup on the forums, go to a tuner and tell them your budget anf your issues, and diagnose your problem.
If your in NZ you could also try a LINK ecu perhaps.