Thanks for your replies. I called my mechanic (Allstar Brendale) and they confirmed it was 100% the ECU as with the coil packs my car would have just cut out, where as my car cuts out and cuts back in. Such a shame it wasnt my sparks or coil pack. They have tried a R34 manual ECU in and it works perfectly. Currently we are waiting to hear back from their jap contact and hopefully we will be able to get answer soon and I can save money as the est is $1500 from them.
Also for the people that I have pmed me I am unable to pm back as I am a new member and havent posted more then 10 times. Thanks for your pms.