I have lost a couple of motors now and the only thing that is the same and let me down every time is the Aytronics computer and cdi unit(sux's ass).A large number of gtr's and gts skylines in Perth run wolf v4+ and have had no problems.C-red gtrrrr has a wolf installed and is running 670 hp,nd4spd runs 687hp and also runs wolf with no problems.I also have heard all the rummors but have not seen them first hand,i have spoken to many people with the wolf's installed and all seem happy and wouldn't use anything else,ask the end users in perth and if its all good give it a go.i just cut the autronics out of my car with a pair of side cutters and would strongly recommend any other computer besides Autronic.
There are also a lot of other people in perth that have pulled out autronics because of there bad experience's John Walligan with the gtr that races at wannaroo,Koong with the 26 powered 240z,1000hp supra at sst just to name a few,there are many others.
My 2 cents