when i got the car and put my foot down a little,it cut out with a lot of black smoke.got in home and found that the rubber bend from the filter to the air intake had caved in (air filter was very old).changed the filter and it was ok for about 2days.now its just really slow.the turbo is spinning but something isnt right.someone menioned a airmass sensor (i think that what he called it).i even put a new diesel filter on but no diffrents.when your driving it,it feels like something is holding it back.