Well, im back up and running again now, but it came at an exspensive cost, about the cost the cost of a brand spanking new VNT2 turbo (£800) or there abouts. The vanes in the old ones were shot due to the fact that 1 bolt had snapped and 1 had come off some how, which attached the turbo to the manifold, thus making it misaligned and the exhaust gasses escaping before they had chance to go through the turbo and spool it up. Anyway now i have no black smoke and **** loads of power and a big smile has returned, but my credit card is now in a pile melting.