I dont think it was particularly cold outside, maybe low 20s, would that be considered low??
Also I know the turbo was brand new when I did the conversion and upgrade, well when the workshop did the upgrade and conversion, I also got them to replace all coolant hoses on the engine, rear main seal on the engine, new water pump, timing belt cam seals etc, basically everything was replaced with new while the engine was out and easy to get to, however the engine itself wasnt opened up. It was a low km 2nd hand series 2 rb25 so I was told. It was a known workshop, but has since closed down, but the owner now works at a powertune. Im sure the seals for the turbo to exhaust would have been new also if thats what you mean??
I will prob take it to powertune - where the owner now works as he knows the car, just trying to get an idea of what the problem could be, hence how much I am looking at to getting it fixed as money is kinda short at the moment.
Thanks for your help guys so far