Also check all your intercooler pipes and connections, if there is a loose hose or clamp etc, your letting metered air escape under boost and its fuelling for that air, and it will run rich.

Good news everyone! The problem did in fact did turn out to be some loose inter cooler piping.the little connector on top of my blow off valve where the vacuum hose connects to was also incredibly loose, I didn't think that could cause such a problem so did even bother to tighten it.

The car is driving fine again. Anyone on here with a gfb GeForce 2 electronic boost controller? Mine is acting weird at the moment if car is idle or driving it will just display on screen a really high number like 75 and won't change or anything. Then sometimes I turn it on and it just keeps flashing over boost, even when idling! im thinking into definitely something to do with the actual unit and not the car this time, otherwise I'm sure the car would have broken down due to the constant over boosting.

The high number at idle is likely your realtime vacuum reading.
My electronic turbsmart controller does this also.

I wouldnt be surprised if it is the unit as I have a G-Force 2  as well and it turned out to be a dud. It would do its own thing no matter how much dialling in you did on it. I currently only use it as a readout and have disabled the boost control side of it. Using a trusty MBC instead.