Did you get the electronic box for the vnt blades coded back into your car? As far as I know they are not interchangeable. Also does the arm for the vnt blades on the turbo move freely? Are you sure that the egr valve is not sticking open? As even with a small hole in the plate it will still draw dirty air through the egr feed pipe into the intake manifold. Where the injectors new and coded into the ecu? Had any problems with the timing chain tensioner causing the valves to hit the pistons and cause the cam deck to split away from the valves?