Hello, I have a TTID 9-3 and has the following issues 1) at about 2800-3000 rpm turbo boost drops, fluctuates and then stabilises but at a lower boost pressure? Any idea what this issue is? Turbo vanes? EGR??? I've tried removing the egr but the torx bolts rounded so- 1a) Where can I get the...

its a vector 150 1.9 tid, i bought this car about 6 weeks ago and all has been fine but a few times starting in the morning the engine management light has appeared and occasionally i have to turn the engine off then back on because theres no turbo, (after restarting engine turbo is back) but...