Was driving down the road when the car lost its power and black smoke started coming from the exaust. Took it to a garage, he plugged his laptop in. Could'nt find any faults and he said he turned down the turbo boost. Can you do this using a laptop? Since then ive had the EGR valve blanked off, that stopped the black smoke. All pipes checked out, no leaks and the intercooler was leaking air so i had that changed. If you squeeze the intercooler pipe you can feel the turbo boost. Tried it with the MAF disconnected, still no difference. Car drives really smooth but turbo's not kicking in.