I own a 2008 144 with 340k miles and having this ongoing issue. Running a scan gauge ll and both map and boost sensors are functioning properly as far as i can tell. It run pretty darn good cruising around town, but soon as i get to the freeway and up to @ 70-75 is when i feel it. You all k ow what it is "LIMP MODE" and i get ticked evey time. Ive replaced EVERYTHING and thousands of $ and man hours later and still same thing. My dpf and egr are deleted. 3 turbos, 2 ecms, to the dealership, and another shop and that a waste and wont take it in unless its something computer programming, the stuff i can't do. Anyone have this issue and found out the problem. What ive read is the map and boost sensors arent communicating. Having bad luck with repair shops can anyone else help out there? If so please give me a shot out. Thanks!