Having the no power below 2k revs trouble. However, its not all the time. it started happening a few days ago and only seemed to happen after a short blast down a duel carriage way with my foot down then would be ok again after turning off for a few hours. Happening more often now, and at random times. she will drive fine for a while then loose low end power for a few mins, then back to normal. happens constantly. It is an intermittent problem, but is happening more often. Is it the EGR needs cleaning, boost pipes changing? or anything else. Also, the EGR, Swirl flaps/manifold were change by the previous owner only 10k mile ago to there expense of £900